Q Shorty Stock, Black, 2 Position, Fits AR/M4 Receivers, Includes Recoil Spring and 3oz Buffer Q-ACC-SHORTY-STOCK-BLK Leading the way with innovative designs and advancement in today's modern firearms, Q brings you their Shorty Stock for all AR/M4 standard receivers. The two position adjustable, integrated locking back plate and a sleek design gives you one of the best functioning low profile stock option for your next PDW rifle.