MambaMag 10-round magazines were designed to fit into most factory stocks, without any modification, allowing users to increase their magazine capacity from the typical 3rd factory mag capacity to 10 rounds. This is great for anyone getting into precision rifle matches, varmint or predator hunting, or just wants to have more fun at the range. SPECS: 10-round capacity Machined 6061-T6 aluminum upper section for reliability Glass-reinforced nylon lower section and cover plate Maximum C.O.A.L. The measurments below factors in 0.020" of clearance at the tightest point of the magazine for the rounds to be able to move. Lithgow LA 102 .308/6.5 Cre Mfg: Mdt