.308 Barrel Nut Shim

OK so you're playing with your new build and son-of-a-bee-itch. The hand guard don't fit, the barrel nut, she ain't in the right position. That's OK, these little guys will help more things forward a bit properly without the need to Macgyver a solution. Similarly, if you can't get your gas tube through the barrel nut without uncomfortably exceeding the torque specs, try inserting one or more of these until the alignment gets closer to perfect.

• (1) Shim. Colors/materials vary but it is some form of steel

• Mil-Spec and aftermarket AR10 barrel nuts
• All AR-10 barrel extensions
• All AR-10 upper receivers