Compatible with Ruger American short action rifles; Bolt Action Magazine Well - Hunter American & PMAG 5 7.62 AC included for reliable detachable box magazine compatibility; Reinforced polymer construction with Type III Hard anodized, machine finished cast aluminum bedding block; High strength steel recoil lugs; Compatible with barrel profiles up to medium palma; Fully adjustable length of pull; Push-button QD swivel compatibility in rear with optional Sling Mount Kits; M-LOK slots on forend sides and bottom for a wide variety of accessory and sling mounting options; Optional 0.00", 0.50", and 0.75" Cheek Risers available to adjust cheek weld (Stock comes pre-fitted with 0.25" Riser); M-LOK compatible for additional accessories