Brownells AR15 Upper Receiver Lapping Tool - It Works
Brownells AR15 Upper Receiver Lapping Tool - It Works
Back many years ago a number of very high end manufacturers of receivers and match barrels had recommended lapping upper receiver faces to optimize accuracy. Some of those folks were JP Rifles, White Oak, Shilen, Lilja, Black Hole, and Hart just to name a few of the experts delivering that advice. At …
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