One nice thing about owning a Ruger 10/22 Rifle is the sheer volume of aftermarket parts and accessories available. Some folks will leave their 10/22 in "box stock" condition and enjoy it for decades. Others will turn their 10/22 into the proverbial money pit and swap out parts until all that remains is the serial numbered receiver. I've lived in both worlds over the years so I've had the chance to work on a few 10/22 project rifles. The one common component that all the rifles shared was the Ruger 10/22 factory 10 round magazine.
TANDEMKROSS has developed two add-on products for Ruger 10/22 magazines that offer a reasonably priced upgrade for Ruger factory magazines. These products do not alter the factory magazines in any way. The TANDEMKROSS Magazine Bumper and Magazine Doubler can both be purchased directly from TANDEMKROSS through their webstore. I recently had the chance to install and use both products.
Magazine Doubler installation was very simple and required only my magazines and a screwdriver.
The Magazine Doubler locks into the bases of the 10/22 magazines and is secured with a butterfly clamp that nests in the thumb depression on the magazine.
Installation of the Magazine Bumper is similar to the Magazine Doubler except a single-sided clamp is used to secure the bumper base to the single magazine.
With the installation finished, the Magazine Bumper adds just over 1/2" to the magazine height. The bumper base also includes grooves that allow you to yank down on the magazine in case of a partial feed that prevents the magazine from dropping free.
With retail prices of $8.99 for the Bumper and $9.99 for the Doubler, these kits offer a significant enhancement at a modest price. I will be adding these kits to all my competition magazines prior to my next competition shoot.
I shot a range video demonstrating the Bumper and Doubler in action, but the wind was up and I had to delete most of the original audio and do a voice over. I hated to do it, but I couldn't scrub the wind from the original audio. The point of the video was to show that the kits offer enhancement to factory magazines without impacting reliability.