MAGPUL UBR(Utility battel rifle) Collapsable Rifle Stock for AR15⁄
M16 and 7.62 x 51 AR’S
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.
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.
7.62×51 ARs may require the use of a custom short buffer and spring.
Mounts on durable Entry Receiver Extension tube (included) to accomodate 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
Front / Rear – Single-side push-button QD sling mount sockets (Left-Right Reversible)
Bottom – 1.25 inch Sling loop
Storage Module (Left-Right Reversible / Removable)
Rubber Butt-Pad, 0.30 inch (Removable)
Extended Rubber Butt-Pad, 0.55 inch
Enhanced Rubber Butt-Pad, 0.70 inch
Aluminum Strike Plate w⁄
1.25 inch sling loop
Dual-side push-button QD Sling Mount Sockets
Specifications for UBR Collapsible Butt Stock (w⁄
Rubber Butt-Pad, 0.30 inch)
Weight, Stock: 1.48 lb.
Weight, w/ Entry Receiver Extension: 1.65 lb.
Length, Stock: 8.00-11.36 inch.
LOP Adjustment: 7-Position (0.56 inch.⁄
LOP Adjustment Range: 3.36 inch.
LOP, Collapsed (M4/M16): 11.1 inch.
LOP, Extended (M4/M16): 14.5 inch.
Standard Rubber Butt-Pad, 0.30 inch weight: 0.09 lb. Optional Extended Rubber Butt-Pad, 0.55 inch weight: 0.12 lb. Optional Enhanced Butt-Pad, 0.70 inch weight: 0.15 lb.