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Magpul UBRŪ Collapsible M4 Stock - Foliage Green

ID: 46440 (Stock-MAG330-FOL)
5.0 stars, based on 1 reviews
z Magpul UBRŪ Collapsible M4 Stock - Foliage Green
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Sorry, this item is Discontinued

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The Magpul UBR (Utility / Battle Rifle), U.S. Patent 6651371, is a fully-featured, adjustable buttstock 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.


  • 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
  • Front/Rear Reversible QD swivel sling mounts fit up to 1.5" push-button swivels (swivel not included)
  • Bottom 1.25" sling loop
Color: Foliage Green
Compatibility: For M4 Series Airsoft and Real Steel Rifles
Material: High Impact Polymer

Manufacturer: Magpul

This item cannot be shipped outside of the United States

1 Customer Review

(Write a review)

by John B. on 07/25/2014
"I purchased this stock second hand and it was essentially brand new but he lost the plates in the back but I really didn't care. Let me say that this is the coolest and most tacticool stock I have ever seen, used, and owned! A lot of people comment on it and are jealous of it, some people have no idea what it is because it just looks so different. This stock is actually pretty comfortable for me when I got used to it. At first I hated it because of the odd shape but after 1 game it just felt perfect. If I get another M4 or a gun that uses an M4 styled retractable stock, this will probably be the stock I pick. The only downside to this stock is the price. At 251.75 dollars, you could pick up a decent gun for that price but hey, you'll be the tacticoolest kid of the field.

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This item is Discontinued.