Additional Information
The Magpul UBR (Utility/Battle Rifle), U.S. Patent 6651371, is a fully-featured, adjustable butt stock for the AR15/M16. Unlike typical collapsing stocks, this modular design offers the stability of a fixed stock with consistent cheek weld in any position. Seven-position length-of-pull (LOP) adjustment is quickly executed with gross motor movement while the integral preset system allows direct access to a preferred position.
A robust lock mechanism and multi-shell construction increase durability under severe impact conditions experienced during malfunction clearing and accommodates large-bore AR calibers with ease. The UBR also provides extra counterbalance weight to improve handling on full-length rifles and weapons with muzzle-heavy accessories or bull-barrels.
Optional components such as dual-side sling mounts and metal strike plate allow the UBR to adapt to the mission at hand.
Features:
- Mounts on durable Entry Receiver Extension tube (included) to accommodate the common M4 carbine buffer and spring
- 7-Position LOP adjustability with customizable preset system for fast access to preferred length
- Multi-shell construction provides solid foundation and shields critical operating parts from penetration damage
- Solid "fixed stock" lockup in all positions
- Enhanced lock mechanism w/integral impact buffer increases drop strength and shock reduction
- Repositionable cheek piece accommodates users requiring extra eye-relief
- Stout construction provides counterbalance weight for improved weapon balance and handling
- Sling Mounts - Front / Rear - Single-side push-button QD sling mount sockets (Left-Right Reversible), Bottom 1.25” Sling Loop.
Specifications:
- Weight, Stock: 1.46 lb.
- Weight, w/Entry Receiver Extension: 1.63 lb.
- Length, Stock: 8.00-11.36 in.
- LOP Adjustment: 7-Position (0.56 in./position)
- LOP Adjustment Range: 3.36 in.
- LOP, Collapsed (M4/M16): 11.10 in.
- LOP, Extended (M4/M16): 14.46 in.
- Standard Rubber Butt-Pad (0.30"): 0.08 lb.
Included Accessories:
- Storage Module (Left-Right Reversible/Removable)
- Rubber Butt-Pad, 0.30" (Removable)
Optional Accessories:
- Extended Rubber Butt-Pad, 0.55": 0.11 lb.
- Enhanced Rubber Butt-Pad, 0.70": 0.13 lb.
- Aluminum Strike Plate w/ 1.25" sling loop
- Dual-side push-button QD Sling Mount Sockets
Note:
- The UBR includes the necessary Entry-Length Receiver Extension tube and all mounting hardware.
- An M4 carbine buffer and spring are required for use with the UBR and are not included.
- 7.62x51 ARs may require the use of a custom short buffer and spring.
