TANDEMKROSS Companion Extended Magazine Bumpers – Ruger 10/22, Black 2-Pack

The TANDEMKROSS Companion Extended Magazine Bumpers 1918N0036BLK1 make factory Ruger 10/22 magazines easier to grip, seat, and remove. Designed for standard 10-round Ruger rotary magazines, these extensions provide additional gripping surface below the magazine well without increasing ammunition capacity.

Manufactured in the USA from durable black Zytel polymer, the Companion bumpers are a practical, affordable improvement for recreational shooting, range sessions, and rimfire competition. Each package includes two magazine bumpers.

More Grip. Easier Magazine Changes.

Factory Ruger 10/22 rotary magazines sit nearly flush with the bottom of the rifle, which can make them difficult to grasp, especially when wearing gloves or working with a snug magazine well.

The Companion adds an extended gripping surface that makes handling the magazine more convenient during loading, unloading, and routine range use.

• Extended Magazine Grip: More surface area for seating and removing factory rotary magazines.
• Durable Zytel Polymer: Lightweight, impact-resistant construction.
• Two Bumpers Included: Upgrade two compatible magazines with one package.
• Easy Installation: Screw-secured attachment without permanent firearm modifications.
• Black Finish: Clean factory-style appearance.
• Made in the USA: Backed by TANDEMKROSS's lifetime product guarantee.

Ruger 10/22 Magazine Compatibility

The Companion is designed for factory-style Ruger 10/22 10-round rotary magazines, including those used with standard 10/22 rifles, 10/22 Takedown models, and Ruger 22 Charger pistols.

It can also be used with compatible Ruger American Rimfire rifles equipped with the same standard Ruger 10-round rotary magazine.

Important: These are magazine base extensions for improved handling, not ammunition-capacity extensions. They do not increase magazine capacity, and magazines are sold separately. They are not intended for BX-15 or BX-25 extended magazines.

Take Magazine Handling a Step Further with Volquartsen

The Companion provides a better grip on the magazine itself. Another useful improvement is making the magazine release easier to operate, especially when changing magazines frequently.

The Ruger 10/22 has a substantial aftermarket, with manufacturers such as KIDD and Volquartsen offering components for custom rimfire builds. For shooters looking beyond basic handling accessories, Volquartsen offers several excellent ways to refine the rifle.

• Volquartsen Extended Magazine Release – VC10MR-B – A precision-machined replacement for the factory magazine release, providing a longer, more accessible control. A natural companion to the TANDEMKROSS bumpers for rifles retaining a compatible factory-style trigger housing.
• Volquartsen TG2000 Trigger Assembly with Rapid Release – VCTP-1-B-10-RR – A premium billet-aluminum trigger assembly combining precision internal components, adjustable trigger characteristics, and an integrated Rapid Release magazine control. An excellent higher-end alternative for shooters ready to upgrade the entire trigger assembly.

For shooters who have already refined their rifle's magazine handling and controls, a precision barrel is another worthwhile area to explore.

The Volquartsen Lightweight Carbon Fiber Barrel – VF10LCF-CT combines a stainless steel barrel with a lightweight carbon fiber sleeve and threaded muzzle. It's a premium option for compatible standard Ruger 10/22 rifle builds seeking match-grade barrel performance without the weight of a conventional heavy steel barrel.

American-Made Small Parts from Pete's Pillars

For another affordable upgrade, explore our Pete's Pillars Ruger 10/22 Viton Bolt Buffer & Stainless Trigger Pin Kit – P7643-BLK.

This American-made kit combines a resilient Viton bolt buffer with close-tolerance stainless steel trigger housing pins, providing a convenient upgrade to two commonly serviced areas of the Ruger 10/22 action.

TANDEMKROSS Companion Specifications

• Manufacturer: TANDEMKROSS
• Model: Companion Extended Magazine Bumper
• MPN: 1918N0036BLK1
• UPC: 091131144923
• Platform: Ruger 10/22 and Compatible Rotary Magazine Applications
• Magazine Type: Standard Ruger 10-Round Rotary
• Material: Zytel Polymer
• Color: Black
• Package Quantity: 2 Magazine Bumpers
• Magazine Capacity: Unchanged
• Installation: Screw-Secured Magazine Base Attachment
• Country of Manufacture: USA
• Warranty: TANDEMKROSS Lifetime Guarantee
• Magazines Included: No

The TANDEMKROSS Companion Extended Magazine Bumper 2-Pack is a simple way to make standard Ruger 10/22 rotary magazines easier to handle without replacing magazines or altering their capacity.

Pair these bumpers with a Volquartsen magazine release for more convenient magazine changes, or explore premium Volquartsen trigger and barrel upgrades as your Ruger 10/22 build develops.

Small change. Big impact.

Real parts. Made by real people.