Magpul® UBR™ - Utility/Battle Rifle Stock
The Magpul® PRS™ (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. The UBR™ also provides extra counterbalance weight to improve handling on full-length rifles and weapons with muzzle-heavy accessories or grenade launchers. 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 Receiver Extension tube and all mounting hardware. An M4 Carbine Buffer and Spring are required for use with the UBR™ and are not included.
 
Made in USA

Features
» Mounts on durable Entry Receiver Extension tube (Included)
» 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/ 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
        º Front / Rear - Single-side push-button QD sling mounts (Left-Right Reversible)
        º Bottom - 1.25" Sling loop
 
Included Accessories
» Storage Module (Left-Right Reversible / Removable)
» Rubber Butt-Pad, 0.30” (Removable)
 
Specifications
» UBR™ Stock (w/ Rubber Butt-Pad, 0.30”)
        º Weight, w/ Entry Receiver Extension: 1.56 lb.
        º Length, Stock: 8.00-11.30 in.
        º LOP Adjustment: 7-Position (0.56 in. / position)
        º LOP Adjustment Range: 3.3 in.
        º LOP, Collapsed (M4/M16): 10.9 in.
        º LOP, Extended (M4/M16): 14.2 in.