The Magpul UBR Gen2 Collapsible Stock in Black (brand part no. MAG482-BLK) is an adjustable stock for AR15/M4 and AR10/SR25 platforms, built to offer the strength and stability of a fixed stock while keeping a consistent, comfortable cheek weld in any position. As an update to the original Utility/Battle Rifle (UBR) stock, the Gen2 adds a fixed cheek piece for that consistent cheek weld across all eight positions and works with Carbine, A5, and SR-25 length buffer systems. Magpul designed it to accommodate large-bore AR calibers and shrug off severe impacts, and the Gen2 shaves about 5 ounces off the original UBR’s weight without losing any of its legendary durability. For AR and AR10 owners who want fixed-stock-level stability with collapsible convenience, this AR stock is Magpul’s battle-rifle-grade option.

Key Specifications

• Adjusts across eight positions.
• Uses a fixed cheek piece for a consistent cheek weld in every position.
• Compatible with Carbine, A5, and SR-25 length buffer systems.
• Built to accommodate large-bore AR calibers.
• Engineered to withstand severe impacts.
• Runs about 5 ounces lighter than the original UBR stock.
• Includes front and rear QD sling attachment points.
• Includes two footman’s loops.
• Uses the ergonomic MOE SL angled-toe rubber butt-pad.
• Features a customizable storage compartment.

Frequently Asked Questions

How many positions does this stock adjust to? Eight positions, each with the same consistent cheek weld thanks to the fixed cheek piece.

What buffer systems is it compatible with? Carbine, A5, and SR-25 length buffer systems.

Is there onboard storage? Yes, it includes a customizable storage compartment.

Buy the Magpul UBR Gen2 Collapsible Stock, Black

A fixed cheek piece across all eight positions means this stock delivers the same accuracy-supporting cheek weld whether it’s extended or collapsed. Order it from our Lubbock, Texas gun shop for fast, insured shipping.