Made of nearly indestructible Zytel, these finely made magazine bumpers are designed to enable your factory magazines to load five extra rounds! These SR22 bumpers extend the bottom of the magazine to allow for more grip and better handling. Even more importantly, they help with seating magazines securely into the pistol frame by providing extra material to "bump" them into a locked state. From competition shooters to casual backyard plinkers, everyone can benefit from a two-pack of these simple to install upgrades. Don't load less ammo, load more with the TandemKross magazine bumpers! FeaturesIncrease your magazine size by fiveBetter magazine seatingExtends bottom of magazine for better grip