The Taran Tactical 9mm PCC Magazine Extension adds up to 5 rounds of ammunition to your OEM 30, 31, and 33 round stick magazines. Designed specifically for OEM Glock mags, each extension is machined from billet aluminum and this model features a black hardcoat anodized finish. It utilizes a unique push pin design that locks the base pad to the magazine and makes field stripping a breeze without the need for specialized tools. Comes with an extra power follower spring for improved reliability and the added weight helps magazines to drop freely for faster reloads. Increase the firepower in your pistol caliber carbine for competition with the TTI +5 Base Pad.