SOG Armory AR15 Armorer's Action Block AR-15 Barrel Installation
TWO PIECE AR-15 UPPER RECEIVER VICE BLOCK
Secures and protects the barrel assembly during removal and replacement within a vise. Fits all flat top and carry handle receivers.
DANIEL of Mariposa, CA
If you have an AR and plan on doing any kind of barrel work, you need this action block. The quality is good, I've been using mine for over a year and it still holds things the right way without damage to the receiver or the barrel.
Albert of Lynnwood, WA
This block is great! I installed the forward assist yesterday and the block held up well! Its very sturdy and well made. My upper reciever is well protected. I am installing the barrel tomorrow and am glad I bought the action block!
Gregg of San Diego, ca
I used one of these in my regular 4 inch vise and it worked fine, No damage to receiver and nice and tight when clamped down. Works fine with both flat top and a2 receivers.