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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.
Made in U.S.A.
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/ 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 mounts (Left-Right Reversible)
- Bottom - 1.25" Sling loop
Included Accessories
- Storage Module (Left-Right
Reversible / Removable)
- Rubber Butt-Pad, 0.30" (Removable)
Optional Accessories*
- Extended Rubber Butt-Pad, 0.55"
- Enhanced Rubber Butt-Pad, 0.70"
- Aluminum Strike Plate w/ 1.25" sling
loop
- Dual-side push-button QD Sling Mount
Sockets
Specifications**
- UBR Collapsible Butt Stock (w/
Rubber Butt-Pad, 0.30")
- Weight, w/ Entry Receiver
Extension: 1.56 lb.
- Length, Stock: 8.00-11.30 in.
- LOP Adjustment: 7-Position (0.56
in. / position)
- LOP Adjustment Range: 3.3 in.
- LOP, Collapsed (M4/M16): 10.9
in.
- LOP, Extended (M4/M16): 14.2 in.
*Standard Rubber Butt-Pad, 0.30" weight: 0.09 lb. Optional Extended
Rubber Butt-Pad, 0.55" weight: 0.12 lb. Optional Enhanced Butt-Pad,
0.70" weight: 0.15 lb.
**Specifications based on factory configuration
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