Furniture · Made in Michigan
Stock Adapter
A factory stock or grip gives you one shape and one length of pull. Left Side Armory stock adapters replace it with a standard mount, so you can fit the AR-style buffer tube stock or Picatinny-mount stock that suits how you shoot and carry.
There are two platforms and two mounts. The CVA adapters fit the CVA Scout and Scout Takedown (A mount), Scout XP Pistol (B mount), Scout V2 pistol, original Scout pistol, Scout Spur .410 shotgun and Optima muzzleloader, and their grip holds three .300 Blackout rounds. The Rossi Brawler adapters are smaller and lighter, with no round storage. Each platform comes in a buffer tube version and a Picatinny version: pick the platform you own, then the mount your stock needs.
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The lineup
The Guide
Select Mount Type
Buffer tube adapters work with standard collapsible and fixed stocks, while Picatinny rail adapters accommodate folding and specialized stock systems. Consider your intended stock type and folding requirements.
- Buffer tube: collapsible and fixed AR-style stocks (tube sold separately)
- Picatinny rail: folding and rail-clamp stocks
- Both mount with the included hardware
Consider Portability Needs
Size and weight matter if you carry the gun in a pack or store it in a tight space. Rossi Brawler adapters offer the smallest footprint, while CVA options provide additional functionality.
- Rossi Brawler: Minimal size and weight impact
- CVA Scout: Enhanced functionality with moderate size increase
- Your stock choice sets overall length and length of pull
Evaluate Storage Requirements
CVA Scout adapters include integrated ammunition storage that Rossi variants lack. This feature adds convenience for hunting and range applications but increases overall dimensions.
- CVA models: 3-round .300 Blackout holder built-in
- Rossi models: No storage but ultra-compact profile
- Consider ammunition accessibility for your use case
Plan Your Stock Selection
Your chosen adapter determines compatible stock types. Buffer tube systems offer the widest selection of aftermarket options, while Picatinny systems enable specialized folding configurations.
- Buffer tube: Largest selection of aftermarket stocks
- Picatinny: folding and compact rail-clamp stocks
- Both systems support quality recoil-absorbing options
Field manual
What's included with each stock adapter?
Every stock adapter includes the complete mounting hardware needed for installation. CVA Scout models include the adapter, grip with integrated 3-round .300 Blackout holder, mounting screws, washers, and packaging. Rossi Brawler models include the adapter, all necessary mounting hardware, and packaging. No additional components are required for basic installation.
Do these adapters require permanent modifications to my platform?
No permanent modifications are required for any of our stock adapters. All adapters use the existing mounting points and attachment systems designed into CVA Scout and Rossi Brawler platforms. Installation is completely reversible, allowing you to return to factory configuration if desired. This approach preserves the original platform while adding enhanced functionality.
What stock options work with these adapters?
Buffer tube adapters accept any standard buffer tube compatible stock, including collapsible, fixed, and recoil-absorbing options from major manufacturers. Picatinny rail adapters work with any stock designed for Picatinny mounting, including folding and specialized compact storage options. This compatibility gives you access to hundreds of aftermarket stock choices versus the single factory option.
How do the CVA and Rossi Brawler adapters differ?
The CVA adapters fit the CVA Scout and Scout Takedown (A mount), Scout XP Pistol (B mount), Scout V2 pistol, original Scout pistol, Scout Spur .410 shotgun and Optima muzzleloader. Fit depends on the mount style, not the caliber. They are the larger pair, and their grip has a built-in holder for three .300 Blackout rounds. The Rossi Brawler adapters fit the Rossi Brawler only, and are smaller and lighter with no round storage. Each platform comes in a buffer tube and a Picatinny version.
What warranty coverage do these adapters include?
Every Left Side Armory stock adapter is covered by our Limited Lifetime warranty. Each one is made in Coopersville, Michigan. If an adapter fails in normal use, contact us and we'll make it right. Keep the mounting screws at their torque spec, since overtightening isn't covered as normal use.
Can I install these adapters myself?
Yes. Each adapter includes its mounting hardware, and installation takes basic hand tools. Remove the factory stock or grip, mount the adapter with the provided screws and washers, then fit your stock. On the CVA adapters, tighten the mounting screw to 65 in-lb (7.3 N·m), and the castle nut on the buffer tube version to 65 in-lb (7.3 N·m) as well. A torque driver makes it easy to hit those numbers without overtightening.
Which mounting system should I choose for my application?
Choose buffer tube if you want the widest selection of stocks, including collapsible and recoil-absorbing designs; the tube is sold separately. Choose Picatinny if you want a folding stock or a stock that clamps to a rail. If you're not sure, think about whether you need the stock to adjust for length (buffer tube) or to fold for storage (Picatinny).
Can I put a stock on a pistol?
Several of the platforms these adapters fit are pistols, including the Rossi Brawler and the Scout pistols. Adding a shoulder stock to a pistol can change its legal classification. Check federal, state and local law before you install a stock on one. We can't advise on the rules for your firearm, so ask a qualified source if you're unsure. For questions about fit, contact us and we'll help.