Learn more about the new Magpul UCS Stock that's available now. Designed as an ideal supplement for firearms with a rear vertical M1913 Picatinny rail, the Magpul UCS (Universal Carbine Stock) offers versatile adaptability with a reversible hinge for left or right folding and five degrees of drop for clearance, accommodating various charging handle styles, ejection port locations, and controls. For optimal sight alignment, it includes two reversible cheek risers (0.50ʺ and 0.75ʺ) and a reversible M1913 clamp for 1/2-slot height adjustment, while its six-position length of pull (LOP) adjustment, spanning three inches via LOP buttons, ensures a comfortable fit for any shooter. Additionally, the UCS features a reversible, anti-rotation QD socket for sling attachments and compatibility with MOE SL and DT Butt-Pads.