Magpul UBR Collapsible Stock

An overview, installation, and range demo of the Magpul UBR Collapsible Stock.

Magpul UBR Collapsible Stock:

  • 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
  • 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 Swivel Sling Mounts
  • Specifications:
    • 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.