Magpul UBR, Black


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. Features
Mounts on durable Entry-Length 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
Adjustment lever requires only gross motor movement to operate yet the entire stock remains streamlined and anti-snag
Solid "fixed stock" lockup and consistent cheek weld in all positions
Enhanced lock mechanism w/ internal impact buffer increases drop strength and shock resistance
Multi-shell construction provides solid foundation and shields critical operating parts from penetration damage
Sloping cheek weld combines a slim profile with user comfort
Stout construction provides counterbalance weight for improved weapon balance and handling
Storage compartment in tail of stock is removable and the door is reversible for user preference
Removable 0.30" Rubber Butt-Pad offers an anti-slip surface and increased impact protection
Sling Mounts
Front/Rear - Reversible QD swivel sling mounts fit up to 1.5" push-button swivels (swivel not included)
Bottom - 1.25" sling loop

UBR Collapsible Butt Stock
Weight: 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.

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  • Model: Magpul UBR, Black
  • 1 Units in Stock

This product was added to our catalog on Wednesday 10 April, 2013.

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