Cold-rolled steel lapping tool chucks into a 3/8”” hand drill to easily “square” the upper receiver face on your AR-15. Helps ensure precise mating of barrel and receiver for added accuracy. Coat face of receiver with aluminum-oxide lapping compound; extra long pilot slides into the bolt carrier tunnel to maintain perfect concentricity with the receiver. Mfg: Brownells SPECS: Cold-rolled steel, in the white. 8A 1/4”” (21cm) long, 3/8”” (9.5mm) diameter shank.
Ar-15 Lower Receiver Buffer Tube Vise Fixture - Brn Ar-15 Lower Receiver/Buffer Tube Vise Fixture, Black Original price was: $59.99.$47.99Current price is: $47.99. 
Ar-15 Upper Receiver Vise Block - Brn Ar-15 Upper Vise Block, Black Original price was: $20.99.$16.79Current price is: $16.79. Ar-15/M16 Upper Receiver Lapping Tool – Ar-15 Upper Receiver Lapping Tool
Original price was: $30.99.$24.79Current price is: $24.79.
Helps True The Upper Receiver For Precise Barrel Fit & Maximum Accuracy
