The Magpul UCS (Universal Carbine Stock) MAG1441-FDE in Flat Dark Earth (FDE) is a premium folding and adjustable stock designed specifically for firearms equipped with a rear M1913 Picatinny rail interface. Engineered for modern platforms such as SIG MCX, MPX, FN SCAR, CZ Scorpion, BRN-180, AKs with 1913 adapters, and other rail-mounted systems, the UCS delivers exceptional modularity, durability, and ergonomic performance.

The stock features a reversible folding mechanism that allows left or right folding configuration to suit different weapon systems and user preferences. A built-in 5-degree drop angle enhances clearance for charging handles, controls, and optic setups across a wide range of modern firearm platforms.

For superior cheek weld and sight alignment, the UCS includes tool-less removable cheek risers (0.50" and 0.75") along with a reversible M1913 clamp offering half-slot height adjustment for precise optic and head positioning. The six-position adjustable length of pull provides approximately 3 inches of adjustment, easily actuated via ambidextrous LOP buttons.

An integrated anti-rotation QD sling socket and MOE SL Enhanced Rubber Butt-Pad improve comfort, recoil control, and sling versatility for tactical, duty, and defensive applications. The Flat Dark Earth (FDE) finish pairs perfectly with modern FDE rifle builds and earth-tone configurations.

IMPORTANT: This stock attaches to a rear 1913 Picatinny rail interface and is NOT compatible with AR-15 buffer tubes or standard receiver extensions.