CZ 457 variants & specs
Quick answer
Dozens of 457 configurations — American, Lux, Varmint, MTR, LRP, Scout, chassis and Target — in .22 LR, .22 WMR and .17 HMR.
44 variants. MSRPs are as reported by the cited source and date.
| Variant | Cal. | Hand | Barrel | Twist | Thread | Weight | Mag | MSRP | Confidence / notes |
|---|---|---|---|---|---|---|---|---|---|
| CZ 457 American .22 LR 24in American · 2019-present | .22 LR | RH | 24 (24.8 per CZ-USA 2019) in | 1:16 (6-groove per CZ) | US: none; EU catalog: 1/2x20 UNF | 3.0 kg / 6.61 lb | 5-rd polymer | $729 (CZ US, 2026); $476-496 at 2019 launch (Ammoland) | high Scope-only (no sights). OAL 1087 mm. Stock is 457-specific (455 stocks do not fit). |
| CZ 457 American .17 HMR 24in American · 2019-present | .17 HMR | RH | 24 (24.8 per CZ-USA 2019) in | 1:9 (6-groove per CZ) | US: none; EU catalog: 1/2x20 UNF | 3.0 kg / 6.61 lb | 5-rd polymer | $729 (CZ US, 2026); $476-496 at 2019 launch (Ammoland) | high Scope-only (no sights). OAL 1087 mm. Stock is 457-specific (455 stocks do not fit). |
| CZ 457 American .22 WMR 24in American · 2019-present | .22 WMR | RH | 24 (24.8 per CZ-USA 2019) in | 1:16 (6-groove per CZ) | US: none; EU catalog: 1/2x20 UNF | 3.0 kg / 6.61 lb | 5-rd polymer | $729 (CZ US, 2026); $476-496 at 2019 launch (Ammoland) | high Scope-only (no sights). OAL 1087 mm. Stock is 457-specific (455 stocks do not fit). |
| CZ 457 American LH .22 LR 24in American LH · c.2021-present | .22 LR | LH | 24 in | 1:16 (6-groove per CZ) | none | 3.0 kg / 6.61 lb | 5-rd polymer | $749 (CZ US) | high Left-hand action; LH bolt handle sold separately by CZ-USA ($67). |
| CZ 457 Varmint .22 LR 20in Varmint · 2019-present | .22 LR | RH | 20 (20.5 per CZ-USA) in | 1:16 (6-groove per CZ) | US: none on current page (threaded 20.6in barrel sets sold separately); EU: 1/2x20 | 3.3 kg / 7.27 lb | 5-rd polymer | $799 (CZ US); $522-542 at 2019 launch | high Most common heavy-barrel donor for chassis builds. |
| CZ 457 Varmint .17 HMR 20in Varmint · 2019-present | .17 HMR | RH | 20 (20.5 per CZ-USA) in | 1:9 (6-groove per CZ) | US: none on current page (threaded 20.6in barrel sets sold separately); EU: 1/2x20 | 3.3 kg / 7.27 lb | 5-rd polymer | $799 (CZ US); $522-542 at 2019 launch | high Most common heavy-barrel donor for chassis builds. |
| CZ 457 Varmint .22 WMR 20in Varmint · 2019-present | .22 WMR | RH | 20 (20.5 per CZ-USA) in | 1:16 (6-groove per CZ) | US: none on current page (threaded 20.6in barrel sets sold separately); EU: 1/2x20 | 3.3 kg / 7.27 lb | 5-rd polymer | $799 (CZ US); $522-542 at 2019 launch | high Most common heavy-barrel donor for chassis builds. |
| CZ 457 Varmint LH .22 LR 20in Varmint LH · c.2021-present | .22 LR | LH | 20 in | 1:16 (6-groove per CZ) | US: none; EU 1/2x20 | 3.3 kg | 5-rd polymer | $799 (CZ US) | high |
| CZ 457 Varmint MTR .22 LR Varmint MTR (Match Target Rifle) · 2019-present | .22 LR | RH | 20.5 (CZ US page shows conflicting 406 mm / 20 in) in | 1:16 (6-groove per CZ) | US page: none; CZ-USA sells 20.6in threaded 1/2x28 MTR barrel set; EU 1/2x20 | 3.4-3.5 kg | 5-rd polymer | $999 (CZ US 2026); $752 at 2019 launch (Ammoland) | high MATCH chamber cut at tightest CIP tolerance; CZ 2019 catalog guaranteed 15 mm groups at 50 m. Several owners report extraction/ejection quirks (see known_issues). |
| CZ 457 MTR 16in (global) MTR · 2019-present (EU) | .22 LR (also .17 HMR in 2019 catalog) | RH | 16 in | 1:16 (6-groove per CZ) | 1/2x20 UNF (CZ global catalog: all non-US barrels 1/2x20) | 3.5 kg | 5-rd polymer | n/a (not US-cataloged in 16in) | med 2019 CZUB catalog lists MTR in .17 HMR too; 2022 catalog only .22 LR. |
| CZ 457 Varmint Precision Chassis MTR 24in Varmint Precision Chassis MTR (MDT chassis) · c.2023-present | .22 LR | RH | 24 in | 1:16 (6-groove per CZ) | 1/2x28 | 3.5 kg / 7.71 lb | 5-rd polymer | $2,399 (CZ US page); Brownells listed $2,029.99 | high |
| CZ 457 Varmint Precision Chassis MTR 16in (Luth-AR) Varmint Precision Chassis MTR · 2022-c.2023 | .22 LR | RH | 16 in | 1:16 (6-groove per CZ) | 1/2x28 | ~7 lb | 5-rd polymer | $1,225 (2022 launch) | high Press-release data. |
| CZ 457 Varmint Precision Chassis (non-MTR) Varmint Precision Chassis · c.2020-2022 | .22 LR (.17 HMR via CZ barrel kit) | RH | 16.5 or 24 in | 1:16 (6-groove per CZ); AR confirms 6-groove CHF | 1/2x28 | ~6.9 lb (16.5in); +0.65 lb for 24in | 5-rd polymer | $999 (American Rifleman) | high AR: 3 lb 8 oz factory trigger; best/avg 50-yd groups 0.310/0.660 in (CCI SV) after cleaning. Shares barreled action with ProVarmint & Precision Trainer. |
| CZ 457 Manners MTR 16.5in Manners MTR · c.2023-present | .22 LR | RH | 16.5 in | 1:16 (6-groove per CZ) | 1/2x28 | 3.5 kg / 7.71 lb | 5-rd polymer | $2,399 (CZ US) | high |
| CZ 457 Varmint Precision Trainer Precision Trainer (Manners stock) · 2019-c.2022 | .22 LR | RH | 16.5 (threaded) / 24 (non-threaded) in | 1:16 (6-groove per CZ) | 1/2x28 (02356/02338); none (02358) | n/a | 5-rd polymer | $1,144 (2019 launch) | high Predecessor of the Manners MTR. |
| CZ 457 Pro-Varmint SR 16.5in Pro-Varmint (Suppressor Ready) · 2019-present | .22 LR | RH | 16.5 in | 1:16 (6-groove per CZ) | 1/2x28 | 3.3 kg / 7.27 lb | 5-rd polymer | $849 (CZ US); $588 at 2019 launch | high CZ US variant title reads 'CZ 457 VARMINT 22 LR' (site data quirk). |
| CZ 457 AT-ONE 16.5in AT-ONE (Boyds stock) · 2019-present | .22 LR | RH | 16.5 in | 1:16 (6-groove per CZ) | 1/2x28 (US); 1/2x20 (EU catalog, 20in/525 mm version) | 3.5 kg / 7.71 lb | 5-rd polymer | $999 (CZ US); $660 at 2019 launch | high Global catalog lists 20in/525 mm AT-ONE instead. |
| CZ 457 AT-ONE 24in AT-ONE (Boyds stock) · 2019-present | .22 LR | RH | 24 in | 1:16 (6-groove per CZ) | 1/2x28 (US); 1/2x20 (EU catalog, 20in/525 mm version) | 3.5 kg / 7.71 lb | 5-rd polymer | $999 (CZ US); $660 at 2019 launch | high Global catalog lists 20in/525 mm AT-ONE instead. |
| CZ 457 Lux .22 LR 24in Lux · 2019-present | .22 LR | RH | 24 (24.8 CZ-USA) in | 1:16 (6-groove per CZ) | US: none; EU: 1/2x20 | 2.9 kg / 6.39 lb | 5-rd polymer | $749 (CZ US); $499-522 at 2019 launch | high Iron sights (tangent rear) + dovetail. |
| CZ 457 Lux .17 HMR 24in Lux · 2019-present | .17 HMR | RH | 24 (24.8 CZ-USA) in | 1:9 (6-groove per CZ) | US: none; EU: 1/2x20 | 2.9 kg / 6.39 lb | 5-rd polymer | $749 (CZ US); $499-522 at 2019 launch | high Iron sights (tangent rear) + dovetail. |
| CZ 457 Lux .22 WMR 24in Lux · 2019-present | .22 WMR | RH | 24 (24.8 CZ-USA) in | 1:16 (6-groove per CZ) | US: none; EU: 1/2x20 | 2.9 kg / 6.39 lb | 5-rd polymer | $749 (CZ US); $499-522 at 2019 launch | high Iron sights (tangent rear) + dovetail. |
| CZ 457 Scout .22 LR 16in Scout (youth) · 2019-present | .22 LR | RH | 16 (16.5 some retailers) in | 1:16 (6-groove per CZ); CZ US page says 12 grooves (likely data error) | 1/2x28 | 2.2 kg / 5 lb | 5-rd polymer (single-shot adapter common) | $649 (CZ US); $365 at 2019 launch | med Spec conflicts on CZ US page (LOP, groove count, OAL '83.2 mm'). Full-size stocks interchange. |
| CZ 457 American Synthetic SR .22 LR 20in American Synthetic SR · c.2020-present | .22 LR | RH (ambidextrous stock) | 20 in | 1:16 (6-groove per CZ) | 1/2x28 | 2.5 kg / 5.51 lb | 5-rd polymer | $679 (CZ US) | high |
| CZ 457 American Synthetic SR .17 HMR 20in American Synthetic SR · c.2020-present | .17 HMR | RH (ambidextrous stock) | 20 in | 1:9 (6-groove per CZ) | 1/2x28 | 2.5 kg / 5.51 lb | 5-rd polymer | $679 (CZ US) | high |
| CZ 457 American Synthetic SR .22 WMR 20in American Synthetic SR · c.2020-present | .22 WMR | RH (ambidextrous stock) | 20 in | 1:16 (6-groove per CZ) | 1/2x28 | 2.5 kg / 5.51 lb | 5-rd polymer | $679 (CZ US) | high |
| CZ 457 Synthetic Bronze Cerakote SR .22 LR 20in American Synthetic SR · c.2024-present | .22 LR | RH | 20 in | 1:16 (6-groove per CZ) | 1/2x28 | 2.5 kg | 5-rd polymer | $679 family price (CZ US) | high |
| CZ 457 Synthetic Stainless SR .22 LR 20in American Synthetic SR / Stainless · c.2022-present | .22 LR | RH | 20 in | 1:16 (6-groove per CZ) | 1/2x28 | 2.5 kg | 5-rd polymer | $679 family price (CZ US) | high US counterpart of global 'CZ 457 Stainless'. |
| CZ 457 Synthetic 16in / 20in / Set (global) Synthetic · 2020-present | .22 LR (16in); .22 LR/.17 HMR/.22 WMR (20in) | RH (ambi stock) | 16 / 20 in | 1:16 (6-groove per CZ) / 1:9 (6-groove per CZ) | 1/2x20 UNF (CZ global catalog: all non-US barrels 1/2x20) | 2.5 kg | 5-rd polymer | n/a | high 'Set' version ships with extra barrel (caliber not stated in catalog table). |
| CZ 457 Stainless (global) Stainless · c.2021-present | .22 LR | RH | 20 in | 1:16 (6-groove per CZ) | 1/2x20 UNF (CZ global catalog: all non-US barrels 1/2x20) | 2.5 kg | 5-rd polymer | n/a | high |
| CZ 457 Hunter Veil .22 LR 20in Hunter Veil · c.2025-present | .22 LR | RH | 20 in | 1:16 (6-groove per CZ) | CZ US page says 1/2x24 (likely error for 1/2x28); compensator fitted | 5.5 lb | 5-rd polymer | $799 (CZ US) | med Thread spec on CZ page looks wrong; verify before listing muzzle devices. |
| CZ 457 Hunter Strata .22 LR 20in (global) Hunter Strata · c.2025-present | .22 LR | RH | 20 in | 1:16 (6-groove per CZ) | 1/2x20 UNF (CZ); Rigad retailer says 1/2x28 (conflict) | ~2.4 kg | 5-rd polymer | n/a (EU) | med Compensator; CZ 600 Trail bolt knob. |
| CZ 457 Ergo .22 LR 20in (global) Ergo · c.2024-present | .22 LR | RH | 20 in | 1:16 (6-groove per CZ) | 1/2x20 | 2.3 kg | 5-rd polymer | n/a (EU) | high CZ datasheet hosted by retailer Frankonia. |
| CZ 457 Range .22 LR 20in / 24in Range · c.2024-present | .22 LR | RH | 20 / 24 in | 1:16 (6-groove per CZ) | 1/2x20 UNF | n/a | 5-rd polymer | n/a | med Retailer description; CZ 600 Range bolt knob. |
| CZ 457 Carbon .22 LR 20in Carbon · Nov 2023-present | .22 LR | RH | 20 in | 1:16 (6-groove per CZ) | 1/2x20 UNF | 2.15 kg (lightest 457) | 5-rd polymer | ~EUR 1,930 (CZ retailer) / CAD 2,099.95 | high 1 MOA guarantee with match ammo. |
| CZ 457 Target (ISSF) .22 LR 26in Target · 2026-present (SHOT Show 2026 debut) | .22 LR | RH (LH action can be used per CZ video) | 26 in | 1:16 / 12 | Diffuser fitted (CZ US lists 1/2x24 - unverified) | 5.2 kg / 11.47 lb | Single-shot | $3,599 (CZ US); EUR 3,099 RRP | high Flyweight two-stage trigger (90-180 g, factory 110 g); 12 mm/50 m 10-shot guarantee. |
| CZ 457 Training Rifle .22 LR 24.8in Training Rifle · 2019-present (renamed Training Rifle XII in global line) | .22 LR | RH | 24.8 in | 1:16 (6-groove per CZ) | US: none; EU 1/2x20 | 3.1 kg | 5-rd polymer | $449 at 2019 launch (US) | high Tangent rear sight. 'XII' suffix meaning not explained by CZ. |
| CZ 457 Jaguar / Jaguar XII .22 LR 28.6in Jaguar · c.2021-present | .22 LR | RH | 28.6 in | 1:16 (6-groove per CZ) | US: none; EU 1/2x20 | 3.3 kg | 10-rd metal (EU catalog) | $485 MSRP listed by CZ dealer (US 02372) | med Longest 457 barrel; tangent rear sight 25-200 m. |
| CZ 457 Premium (RH & LH) Premium · c.2021-present | .22 LR / .17 HMR / .22 WMR (LH: .22 LR only) | RH / LH | 24 in | 1:16 (6-groove per CZ) / 1:9 (6-groove per CZ) | 1/2x20 UNF (threaded in EU) | 3.2 kg | 5-rd polymer | n/a (EU); CZ US lists Premium page without data | high Tangent rear + fiber-optic front. |
| CZ 457 Royal 16in / 20in Royal · 2021-present | .22 LR / .17 HMR (16in); +.22 WMR (20in) | RH | 16 / 20 (US 16.5 / 20.5) in | 1:16 (6-groove per CZ) / 1:9 (6-groove per CZ) | US: none; EU 1/2x20 | 2.9 kg | 5-rd polymer | $929 (Shooting Times 2021 review); later $739 dealer MSRP | med US MSRP sources conflict. |
| CZ 457 Thumbhole 16in / 20in (global) Thumbhole · 2020-present | .22 LR (16in); .22 LR/.17 HMR/.22 WMR (20in) | RH | 16 / 20 in | 1:16 (6-groove per CZ) / 1:9 (6-groove per CZ) | 1/2x20 + compensator | 3.4 kg | 5-rd polymer | n/a | high |
| CZ 457 LRP / LRP Black (Long Range Precision) LRP · 2020-present | .22 LR | RH | 20 in | 1:16 (6-groove per CZ) | 1/2x20 + compensator (EU); US LRP threaded | 3.9 kg | 5-rd polymer | n/a | high Anarchy bottom metal NOT compatible with LRP stock. |
| CZ 457 MDT Chassis (global) MDT Chassis · c.2021-present | .22 LR | RH | 20 in | 1:16 (6-groove per CZ) | 1/2x20 + compensator | 3.4 kg | 5-rd polymer | n/a | high |
| CZ 457 Varmint Synthetic (global) Varmint Synthetic · c.2023-present | .22 LR / .22 WMR | RH | 16.5 (reported) in | 1:16 (6-groove per CZ) | 1/2x20 UNF (CZ global catalog: all non-US barrels 1/2x20) | ~3.6 kg (reported) | 5-rd polymer | n/a | low Product page geo-blocked from US; specs from Wikipedia only. Wikipedia czfirearms.com sitemap lists cz-457-varmint-synthetic |
| NOT FOUND: factory .17 Mach 2 / .22 Short / LH chassis models negative finding · | n/a | in | med No factory 457 in .17 HM2 found (CZ magazines are labeled .22 LR/.17 Mach 2 and Lothar Walther sells 17 HM2 CZ 455/457 drop-ins, so HM2 is aftermarket-only). LH limited to American LH, Varmint LH, Premium LH. |
Platform specs
Checked 2026-10-08. Confidence: high = CZ manual, CZ/CZ-USA page, or measured by a major publication; med = reputable maker/retailer or multiple owners; low = single forum/snippet.
Source keys (URLs at bottom): CZ 457 manual 05/2025 · CZ 455/457 Mini-set manual · CZ 457 barrels & stocks compatibility chart · czfirearms.com/en-us model pages · CZ 2022 catalog · CZUB 2019 catalog · CZ "Three new CZ 457 rimfire rifles" (2020) · CZ 457 Carbon microsite/press · CZ 457 Flyweight Trigger manual (01/2026) · Ammoland 2019 CZ-USA launch release · American Rifleman CZ 457 Varmint Precision Chassis review · shop.cz-usa.com · Kurt the Gunsmith headspace article · Area 419 CZ457 base (Anarchy listing) · Anarchy Outdoors listings
1. Action
| Spec | Value | Confidence | Source |
|---|---|---|---|
| Receiver | Steel, slab-sided, ~1 in shorter than CZ 455. Nitride finish (stainless/PVD/Cerakote on some models) | high | Ammoland 2019 CZ-USA launch release, American Rifleman |
| Bolt throw | 60 deg (CZ 455 was 90 deg). Gives clearance for large ocular bells and lower rings | high | Ammoland 2019 CZ-USA launch release, American Rifleman, CZ "Three new CZ 457 rimfire rifles" (2020) |
| Bolt | One-piece. Cocks on opening. Extractor (right) plus "holder" (left) claw. Cocking indicator at rear. Separate bolt catch for removal | high | American Rifleman, CZ manual |
| Striker | 62% lighter than the previous generation. CZ says dry-fire won't damage it | high | CZ 457 Carbon microsite/press |
| Safety | Right side of receiver. Pull rearward = SAFE (white dot), push forward = fire (US-style). Locks the trigger; the bolt can still be opened to unload | high | CZ manual, Ammoland 2019 CZ-USA launch release, American Rifleman |
| Bolt knob thread | M6x1 | med | (Area 419 text on Anarchy listing) |
| Handedness | RH and LH actions (LH: American LH, Varmint LH, Premium LH). The LH bolt handle is a separate part (CZ-USA $67) | high | CZ, CZ-USA |
| Chamberings | .22 LR, .22 WMR, .17 HMR on the same bolt. .17 HM2 only via aftermarket barrels (e.g., Lothar Walther) | high | CZ "Three new CZ 457 rimfire rifles" (2020), CZ 2022 catalog |
2. Interchangeable barrel system
| Spec | Value | Confidence | Source |
|---|---|---|---|
| Retention | Barrel slips into the receiver and is held by two barrel set screws (manual part #2, "Barrel Screw (2x)"). Not threaded | high | CZ manual, American Rifleman, Kurt the Gunsmith |
| Swap procedure | 1) Remove mag and bolt. 2) Remove the 2 stock screws and trigger guard, then lift off the stock. 3) Fit/remove the mag-housing insert (.22 LR only). 4) Loosen the mag-housing rear screw 1-2 turns. 5) Loosen both barrel screws and pull the barrel. Reassemble with the mag-housing screw tightened before the barrel screws | high | CZ manual |
| Torque values | Barrel screws 5.5 Nm (~49 in-lb). Stock (action) screws 3.5 Nm (~31 in-lb) (CZ 455: 5 / 3 Nm) | high | CZ manual, CZ manual |
| Headspace on swaps | CZ: every Mini-set barrel "must be fitted individually by a gunsmith" (headspace gauge; may need to remove shoulder or face material per CIP). Barrels supplied with the rifle are factory fitted. CZ marketing says "User-swappable barrels and calibers". These conflict. Advise a headspace check | high (both statements) | CZ manual, CZ |
| Typical headspace | One measured rifle: receiver-face-to-bolt-face 1.236 in, barrel extension 1.190 in, headspace 0.046 in. SAAMI .22 LR chamber headspace .043-.051 in. Bolt shims tighten it | med | Kurt the Gunsmith |
| 455 compatibility | Barrels and magazines interchange with the CZ 455 (same interface). Stocks, triggers and bottom metal do not | high (barrels/mags) / med (stocks) | CZ manual, (455/457 stainless barrel sets), RFC snippets |
| Factory barrel ODs | Varmint: 0.866 in cylindrical (CZ-USA). Manners specs the factory barrel at 0.875 in. Aftermarket: Lilja .900, IBI .920, L3i 1.180 (check stock channel) | high / med | Ammoland 2019 CZ-USA launch release, Manners dealer, maker pages |
| Rifling | Cold hammer forged, 6-groove. .22 LR & .22 WMR 1:16, .17 HMR 1:9. 457 Target: 12-groove 26 in barrel. Lilja aftermarket: 3-groove | high | CZ, CZ 2022 catalog, American Rifleman |
| MATCH chamber | MTR, Varmint Precision Chassis MTR, Manners MTR, LRP, Range, Carbon, Target. Cut "to the tightest" CIP limits. MTR guarantee: 15 mm at 50 m (2019). Target: 12 mm | high | P.B. Dionisio, Ammoland 2019 CZ-USA launch release, CZ 457 Carbon microsite/press |
| Muzzle thread | US threaded models: 1/2x28. Non-US: all barrels 1/2x20 UNF ("does not apply for US market"). The CZ US pages list 1/2x24 for Hunter Veil and Target, which looks like a data error. Verify | high (28/20) / low (24) | CZ manual, CZ "Three new CZ 457 rimfire rifles" (2020), CZ-USA, CZ |
| Barrel sets (US) | CZ-USA sells barrel sets ($271-409) in American, Lux, Varmint, SR, MTR, MTR SR and LR-MTR configurations. Each includes a 5-rd mag + insert | high | CZ-USA |
| Compatibility chart | CZ publishes a barrel-vs-stock chart. The chart marks Varmint, Varmint MTR and Long Range Precision (heavy) barrels as not compatible with American, Lux, Premium, Training Rifle, Jaguar XII and Royal stocks (slim barrel channels). No exclusions are marked for Ergo, Strata, Veil, Synthetic, Stainless, Varmint, Varmint MTR, Thumbhole, LRP or AT-ONE stocks. I checked the rendered chart visually | high | CZ manual |
3. Stock interface, bedding, bottom metal
| Spec | Value | Confidence | Source |
|---|---|---|---|
| Screws | Two "connecting" screws: front (#73) and rear (#74). The rear screw also holds the aluminum trigger guard/grip frame | high | CZ manual, American Rifleman |
| Torque | 3.5 Nm (~31 in-lb). Owners experiment, but the official value is 3.5 | high | CZ manual, CZ manual |
| Bedding | CZ: "new type of bedding which allows constant tightening of the screws" (2019). The stock has a separate "457 stock insert recoil lug" part (CZ-USA $9) | high | P.B. Dionisio, CZ-USA |
| Bottom metal | Two-piece: magazine housing/frame plus aluminum trigger guard (factory). Aftermarket: Anarchy (with barricade stop; not for LRP stock or WOOX), L3i billet, CZ duralumin guard | high | American Rifleman, Anarchy Outdoors listings, cz-parts.com |
| Stock interchange | CZ-USA: "stocks can be interchanged among the various 457 rimfires" (subject to barrel channel, per CZ manual). CZ 455 stocks do not fit (shorter receiver, different screw locations and guard) | high / med | Ammoland 2019 CZ-USA launch release, RFC snippet |
| Action-screw spacing | No CZ figure published. Owner caliper measurement: rear screw center 5.50 in from front screw center (Rimfire Central); Boyds CZ 457 AT-ONE listing states 5 1/2 in c-c (Boyds). Screws M5x0.8 (owner report) | med | two independent sources agree, 2026-10-10 |
| Free float | Chassis/varmint stocks are free-floating (AR on VPC chassis) | high | American Rifleman |
4. Scope mounting
| Spec | Value | Confidence | Source |
|---|---|---|---|
| Interface | Integral 11 mm dovetail. Not drilled & tapped. The receiver is "partially drilled in four places" to index set screws on CZ's own Picatinny rail | high | American Rifleman, CZ manual |
| Mount types | 11 mm rings (CZ, Talley) or clamp-on Picatinny rails (EGW HD, Area 419, MDT, CZUB 0/25 MOA Weaver) | high | maker pages, CZ-USA |
| Rail torque | Area 419: 22 in-lb (2.5 Nm) clamp screws. Area 419 says set-screw dovetail bases can slide over time | high | Anarchy Outdoors |
| 455 bases | Don't assume CZ 455 bases fit (receiver geometry differs). Buy 457-specific | med | search synthesis (EGW blog / SH thread) |
5. Trigger
| Spec | Value | Confidence | Source |
|---|---|---|---|
| Standard | Single-stage, adjustable 8-15 N (1.8-3.4 lb), factory set 11.1-14 N (2.5-3.1 lb). Adjusts pull (screw A) and overtravel (B) with the stock off, and take-up (C) in the shoe. AR measured 3 lb 8 oz | high | CZ manual, American Rifleman, CZ |
| Comfort trigger | 5-7 N, factory 6 +/- 0.5 N (some models/markets) | high | CZ manual |
| Flyweight | Two-stage match trigger plus matched striker. 2nd stage 90-180 g, factory 110 +/- 10 g. Fits all CZ 457 versions (.22 LR/.22 WMR/.17 HMR). Adjusts with the trigger guard off. Standard on the 457 Target | high | CZ, CZ Target press |
| Aftermarket | Timney CZ457 (10 oz-2 lb) and JARD CZ457 (3-12 oz) are 457-specific (not 455). Spring kits: YoDave, cz-parts. TriggerTech has no CZ 457 trigger | high | maker pages |
| Safety note | The manual warns against setting pull/travel too low and specifies a bolt-cycling safety check | high | CZ manual |
6. Magazines
| Spec | Value | Confidence | Source |
|---|---|---|---|
| Type | Detachable box. The catch at the front of the mag is pressed rearward | high | CZ manual |
| .22 LR | Polymer 5/10/15/25. Steel 5/10. Single-shot adapter. Fits 452/453/455/457/512 | high | CZ-USA, cz-parts.com |
| .22 WMR/.17 HMR | Polymer 5/10 (shared WMR/HMR) | high | CZ-USA |
| Mag-housing insert | Used only with .22 LR. Remove for magnum barrels | high | CZ manual |
| Jaguar XII | 10-rd metal mag standard | high | CZ 2022 catalog |
| Extensions | MKM +3 (5+3, 10+3), Anarchy +3 | high | maker pages |
7. Dimensions by model
See variants.csv (barrel lengths 16-28.6 in; weights 2.15 kg Carbon to 5.2 kg Target; LOP 350-360 mm typical).
8. T1x crossover notes
- No action-level crossover. Triggers, mags, bolts, barrels, bottom metal and scope rails are platform-specific. (T1x uses T3x triggers, 5/16-24 bolt threads and a drilled-and-tapped receiver with its own rail pattern. The CZ 457 uses M6x1 knobs and a dovetail-clamp rail.)
- Same maker, separate SKU: KRG Bravo, MDT Oryx/XRS/LSS Gen3/ACC Premier/Field Stock/scope bases, XLR Element 4.0 (RH only), Grey Birch La Chassis and Danger Noodle barrels, IBI Wait-Less, Whidden prefits, Lothar Walther, MKM extensions, Area 419 rails, EGW rails, Talley, Anarchy mag releases/extensions, Boyds.
- CZ-only lines (no T1x version found): MDT LSS Gen2, MDT ACC Elite, Manners TCS, L3i barrels, Lilja drop-ins, JARD, Timney CZ457, CZ Flyweight.
- Truly shared: 1/2x28 US muzzle accessories (UK/EU: both platforms 1/2x20), bipods, ARCA/M-LOK accessories, KRG LOP kits.
Source URLs
- https://czubpimstorage.blob.core.windows.net/strapi-pim/assets/735342000443_CZ_457_05_2025_en_es_cs_de_fr_8dc25ceb9d.pdf
- https://czubpimstorage.blob.core.windows.net/strapi-pim/assets/cz_455_cz_457_mini_set_1_0d055c2da9.pdf
- https://czubpimstorage.blob.core.windows.net/strapi-pim/assets/Barrels_and_stocks_compatibily_CZ_457_ed2f283c04.pdf
- https://www.czfirearms.com/en-us/products/rimfire-rifles/cz-457-series/cz-457 (and model sub-pages)
- https://katalogy.czub.cz/cz-katalog-2022-en/48-49/ · https://karelvoves.cz/wp-content/uploads/2019/02/Katolog-%C4%8CZ-UB-EN.pdf
- https://www.czfirearms.com/en-us/news/three-new-cz-457-rimfire-rifles
- https://cz457.czub.cz/carbon/
- https://czubstrapiwebsitestorage.blob.core.windows.net/strapi-global/assets/CZ_457_Flyweight_Trigger_01_2026_en_es_cs_de_fr_9ec9a1f6c3.pdf
- https://www.ammoland.com/2019/06/new-2019-cz-457-family-of-rimfire-rifles/
- https://www.americanrifleman.org/content/review-cz-457-varmint-precision-chassis-rifle/
- https://shop.cz-usa.com/cz-products/rifles/457-barrel-sets.html · https://shop.cz-usa.com/catalogsearch/result/index/?q=457
- https://kurtthegunsmith.com/cz-457-accuracy-the-most-affordable-way-to-accurize-your-cz/
- https://www.anarchyoutdoors.com/area-419-cz-457-scope-base/ · https://www.anarchyoutdoors.com/area-419-m6x1-thread-bolt-knob/
- https://www.anarchyoutdoors.com/cz-457-bottom-metal/