The Magpul UCS (Universal Carbine Stock) – Black is a purpose-built folding stock designed for rifles using a rear 1913 Picatinny rail. Built with Magpul’s legendary strength and ergonomics, the UCS brings adjustability and rugged reliability to modern carbine platforms.
A reversible folding hinge allows the stock to fold to either side, while its six-position adjustable length of pull (3" of movement) ensures the perfect fit. The 5° drop angle provides essential clearance for charging handles and ejection ports.
The UCS also includes two tool-less cheek risers for improved comfort and sight alignment. Finished in a sleek Black color, this model blends tactical function with proven Magpul durability.
Lightweight, compact, and designed for real-world use, the Magpul UCS Black stock is the ultimate upgrade for rifles with a rear Picatinny rail.
Perfect for: shooters needing a folding stock in classic Black, tactical rifle builds with a 1913 rear rail, and Magpul enthusiasts upgrading their carbine platforms.
✅ Designed for rifles with rear 1913 Picatinny rails – no buffer tube needed
✅ Six-position length of pull adjustment (~3" total)
✅ Reversible folding hinge – folds left or right for user preference
✅ 5° drop angle improves clearance with charging handles & ejection ports
✅ Includes two removable cheek risers (tool-free adjustment)
✅ Black finish – classic Magpul styling, non-reflective and durable
✅ Lightweight, rugged construction built for hard use
Magpul Industries
Magpul Industries
Midwest Industries
Magpul Industries
