The Magpul PRS (Precision Rifle/Sniper) – AR10/SR25 Model is a drop-in, precision-adjustable butt stock especially designed for the longer charging handle throw of 7.62 NATO platforms. Designed to offer the fine-tuned, customized feel of a precision target stock, the PRS is adjustable for both cheek riser height and length-of-pull without sacrificing the durability necessary to withstand the operational environment. Compared to the A2 stock, the PRS can shorten the LOP by 0.25" or extend it by 0.75". Machined aluminum adjustment knobs feature positive-locking click detents to maintain position under recoil and allows easy, tool-less adjustments by simply rotating the knobs. Machined aluminum butt-plate and alloy steel adjustment shaft provide stability and strength to withstand severe impact conditions. Rubber butt-pad offers positive shoulder purchase to prevent slippage for optimal accuracy even with body armor or modular gear