Shop › MAGPUL UBR GEN 2 ADJ STK AR15/M4 GRY MAGPUL UBR GEN 2 ADJ STK AR15/M4 GRY $189.95 Magpul Industries UBR Gen 2, Utility/Battle Rifle Adjustable Carbine Stock, Buffer Tube Included, Fits AR15/M4/AR10/SR25, Gray MAG482-GRY Quantity: Add To Cart Added! Magpul Industries UBR Gen 2, Utility/Battle Rifle Adjustable Carbine Stock, Buffer Tube Included, Fits AR15/M4/AR10/SR25, Gray MAG482-GRY