Description Feed lips and anti-tilt follower are reinforced for strength. A bolstered floor plate is set flush so that it will not catch on other magazines when pulled from a pouch. Specially designed spine eliminates the possibility of over insertion. Engineered to function flawlessly with all M4, M16/AR15, HK416 and FN Scar rifles and carbines. Comes with flush and shock absorbing extended floor plate.