Grey Birch MFG La Chassis · CZ 457 Chassis · Folding Rimfire Chassis
Grey Birch MFG builds lightweight, folding chassis systems with clean engineering and thoughtful ergonomics. Their La Chassis turns a rimfire into a compact, precise platform that packs down for travel and locks up solid on the line. As an authorized Grey Birch dealer, we carry the La Chassis for the CZ 457, along with the CZ 457 parts that complete the build.
Featured La Chassis
Two takes on the CZ 457 La Chassis. Compare forend length and finish, then check each listing for configuration and availability.
La Chassis 16 Inch
The long-forend La Chassis gives your CZ 457 more room up front for bipods, weights and barricade work, in a folding, lightweight aluminum platform.
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La Chassis 10 Inch M81 Camo
A compact, quick-handling La Chassis in M81 Camo for a CZ 457 that carries well in the field and still folds for transport.
View Chassis Details →Find your La Chassis.
Grey Birch builds the La Chassis for specific rimfire actions. Pick your rifle and forend length, then confirm the exact inlet on the product page.
Made in the USA for Your CZ 457
Pete's Pillars parts, machined in the USA for the CZ 455 and 457. The upgrades that finish a La Chassis build.
CZ 457 Firing PinUpgraded replacement with a reshaped tip.Shop Now →
Made in USA
Finger Groove XL Bolt KnobBillet aluminum knob for fast, positive cycling.Shop Now →
Made in USA
Extended Cocking IndicatorStainless steel LCI you can see and feel.Shop Now →
Made in USA
Extractor & HolderUpgraded extractor and holder for CZ rimfire.Shop Now →
Made in USA
Extended Mag ReleaseSerrated, easy-to-find release for faster changes.Shop Now →
Made in USA
CZ 457 Picatinny Rail11mm dovetail to Picatinny, in 0, 15 and 30 MOA.Shop Now →
Made in USA
Premium Action ScrewsCNC machined replacement action screws.Shop Now →
Made in USA
8 oz Trigger SpringA lighter pull for the factory CZ 457 trigger.Shop Now →
The CZ 457 Firing Pin, Upgraded
A new chassis changes how the rifle fits you. A better firing pin changes what happens inside the action. Our PP457FP-T is an upgraded, reshaped-tip replacement for the CZ 457, machined in the USA by the same shop that builds our pillars, rails and bolt knobs.
Upgrade the Rifle
Barrels, triggers and optics to build out your La Chassis.
Accessories & Gear
Bipods, ARCA and support gear for the finished rifle.
Compare Chassis Brands
Grey Birch is one approach to a modern chassis. Compare weight, geometry and features before you choose.
MDT
Oryx, ESS and ACC chassis with the deepest accessory ecosystem.
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The Bravo Rimfire stock and X-Ray and Whiskey-3 chassis.
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Envy and Element modular chassis for centerfire builds.
Explore XLRAll Rifle Chassis
Compare every chassis we carry by platform, brand and intended use.
Shop Rifle ChassisChoosing Your La Chassis
Forend length
The 16 inch forend gives you more room for a bipod, weights and barricade contact, and moves the balance point forward for steadier positional shooting. The 10 inch forend keeps the rifle compact and quick to carry.
Folding and weight
The La Chassis is a lightweight aluminum system with a folding stock, so the rifle packs down for travel and still locks up solid when you deploy it.
Match the inlet
Grey Birch makes platform-specific versions. A CZ 457 La Chassis is made for the CZ 457 only, so always choose the listing for your exact rifle.
Finish the build
Pair your La Chassis with a match barrel, a trigger, the right magazines and a bipod.
Grey Birch FAQ
What is the Grey Birch La Chassis?
The La Chassis is Grey Birch MFG's lightweight, folding aluminum chassis family, built in platform-specific versions for popular rimfire actions.
16 inch or 10 inch forend?
Choose the 16 inch for bench, NRL22 and positional shooting where forend room and forward balance help. Choose the 10 inch for a compact, light rifle that carries well in the field.
Will a CZ 457 La Chassis fit my 10/22 or Tikka T1x?
No. Each La Chassis is made for one platform. Select the version listed for your exact rifle.
What magazines does the CZ 457 La Chassis use?
CZ 457 La Chassis builds use CZ 457 magazines, including factory CZ mags and billet magazines from L3i and Position7. Check the listing for any fitment notes.
Keep Building
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Every CZ 455 and 457 upgrade we carry, including our own parts.
Explore CZ 457Chassis Accessories
ARCA rails, weights, stops and parts for every chassis we carry.
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Every manufacturer we carry in one place, from MDT and Volquartsen to our own USA-made parts.
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