- Bolting the two halves of the upper receiver block fully supports the upper receiver to prevent damage from torque twisting forces when installing or removing barrels from the
- receiver.
- The upper half of the block inserts into the AR10 receiver just like a bolt carrier group. The bottom half of the block can be bolted together with the upper block half with the
- provided steel bolts. This fully supports the inside and the bottom of the AR10 receiver and it also leaves the receiver optics rail open for mounting accessories and optics.
- The AR10 upper receiver block also has a hole through the length of the block to act as a bore brush guide for cleaning out the bore of the barrel.
- Constructed with blue anodized Aluminum.
- Dimensions 8.4Ā¯L X 3.1Ā¯H X 2.0Ā¯D
- Weight: 29.0 oz.