The PRS GEN3 Precision-Adjustable Stock is a field precision stock for AR15/M16 and AR10/SR25 (DPMS) platforms, featuring tool-less length of pull and cheek piece height adjustment. With solid adjustments for length of pull and cheek piece height via aluminum detent knobs, the PRS GEN3 (Precision Rifle/Sniper) stock provides a stable interface and is intended for semi-automatic sniper or varmint type rifles. Offering a nearly universal fit, it is optimized for rifle-length receiver extensions but will also mount to many mil-spec carbine and A5-length tubes*. Includes a cant/height-adjustable rubber butt-pad and rotation-limiting QD sling swivel cups as well as M-LOK(R) slots on the bottom for rear monopod mounting.FeaturesMounts to rifle-length receiver extension tube without A2 spacer but will also accommodate mil-spec sized M4 Carbine and many A5-length tubes with standard Castle Nuts and End Plates (not included)*Enhanced strength butt-plate withstands severe impact and recoil up to .50 BMGRubber butt-pad provides positive shoulder purchase to prevent slippage and is adjustable for both cant and heightMachined aluminum LOP (length of pull) and Cheek Piece adjustment knobs with positive locking click detentsSteel adjustment shafts finished with Melonite(R) for wear and corrosion resistanceAll aluminum components finished with MIL-A-8625F, Type III, Class 2 hard anodizingBottom M-LOK slots provide additional sling mounting possibilities or for attaching 1913 Picatinny rails for use with a monopodSling MountsFront/Rear – rotation-limited QD sling swivel mounts (swivels not included)Rear – 1.25″ aluminum sling loop (left-right reversible)*NOTE FROM MANUFACTURER: Due to the wide variety of designs and dimensions of carbine receiver extensions as well as the associated mounting hardware, proper fit cannot be guaranteed. Mounting to a rifle-length receiver extension is recommended to ensure optimal fit and function.*NOTE FROM AERO PRECISION: Our Aero-branded carbine receiver extensions as well as the associated mounting hardware will fit on the Magpul PRS(R) Gen3 Adjustable Stock.