The Leapers UTG PRO Ops Ready S1 MIL-SPEC stock is a heavy duty carbine stock for the AR platform. This storage capable stock features dual waterproof battery tubes that hold up to four CR123 batteries each, as well as provide improved cheek weld. This stock features an extended length of pull, ideal for lankier shooters. Like all UTG PRO products, this stock is proudly designed and manufactured in the U.S.A.! Features: - Durable impact resistant polymer - Fits MIL-SPEC diameter stocks - Extended 8" length for increased length of pull