Magpul just dropped its latest stock accessory, filling a very particular niche. The UCS comprises a lightweight stock system for semi-auto carbines utilizing a vertical M1913 Picatinny rail at the rear of the receiver.

Magpul UCS (Universal Carbine Stock)

The UCS design accommodates a wide variety of charging handle styles, ejection port locations and controls, according to Magpul. It features a reversible hinge for for left or right folding configurations, along with five degrees of drop for clearance.

The UCS stock ships with two reversible cheek risers (0.50 and 0.75 inch). When combined with the reversible M1913 clamp (allowing for a 1/2-slot height adjustment), the design enables shooters to dial in head placement for an optimal sight picture using iron sights or optics.

Magpul’s UCS offers 3 inches of length of pull, across six different adjustment positions. Shooters simply manipulate the length via the LOP buttons. Weighing a mere 18 ounces, the UCS includes a reversible, anti-rotation QD socket for sling attachment. The system is compatible with MOE SL and DT buttpads.

Magpul UCS Features:

Six position, push-button adjustable LOP (3” total adjustment)
Reversible folding mechanism
Toolless removable and reversible cheek risers included (0.5” and 0.75”)
5° drop angle for charging handle and ejection port clearance
Reversible M1913 clamp for ½-slot height adjustment
Reversible anti-rotation QD Socket
Weighs just over 18 ounces
Colors: Black, FDE
MSRP: $219.95

Folding Magpul UCS stock for vertical Picatinny rails.

Compatibility: Receivers equipped with an M1913 rail instead of a buffer tube from the factory, or receivers with an M1913 aftermarket adapter, including but not limited to the SIG MPX/MCX, FN SCAR, IWI Galil, CZ Scorpion, Ruger LC carbine, Brownells BRN-180, and certain AK variants such as the PSAAK/AK-V