Guntec USA AR15 Action Block Upper Receiver M16 AR-15
Protectd Receiver From Damage When Clamping for Barrel and Handguard Installs.
Heavy-duty blocks allow you to firmly clamp AR-15/M16 receiver halves in a vise without risk of crushing, twisting, or otherwise distorting them when applying vise pressure or torquing the barrel nut. Keeps your rifle secure for safe, effective cleaning, assembly, and repair. Surrounds the entire upper receiver. Recommend supporting it inside with your bolt carrier to make rebarreling the AR-15/M16 an easy, one-man job. Lets you tightly clamp a standard or flattop receiver in a large bench vise for barrel removal/installation. Torque generated while tightening the barrel nut is transmitted to the block and insert, not the receiver. Minimizes the possibility of damage to the barrel detent pin and receiver detent notch. Holds securely without marring the finish.