The Magpul UCS (Universal Carbine Stock) is engineered for maximum versatility with M1913 Picatinny rail compatibility and features a reversible folding mechanism for left or right configuration in durable Olive Drab Green finish.Magpul UCS Universal Carbine Stock (Model MAG1441ODG)Six (6) position push-button length of pull adjustment with 3 inches total adjustmentCompatible with all firearms featuring 1913 rail on rear of receiverReversible folding mechanism for left and right configurationsFive degrees of drop for charging handle and control clearanceOlive Drab Green polymer constructionIdeal for tactical applications and custom firearm builds requiring adaptable stock solutions with professional-grade durability and precise fit across multiple platform configurations.