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. Unbreakable urethane vise block takes all the clamping force, so your expensive lower receiver won’t be damaged or distorted. Insert block into the magazine housing from the top or bottom, then clamp the other end in your bench vise. The magazine catch locks to the block, safely and securely holding the rifle for assembly, disassembly, cleaning, or repair. Will not mar or scratch the finish. Fits tightly in mos Mfg: Brownells SPECS: High-density urethane plastic, black. 5″ (12cm) high, 2A 1/4″ (5.7cm) wide, A 3/4″ (19cm) thick.
Ar-15 Lower Receiver Buffer Tube Vise Fixture - Brn Ar-15 Lower Reciever/Buffer Tube Vise Fixture, Black
$59.99 
Ar-15 Rifle Receiver Extension & Buffer Kit - Brn Ar-15 Rifle Receiver Extension & Buffer Kit
$79.99
Ar-15/M16 Lower Receiver Vise Block – Brn Ar-15/M16 Action & Lower Receiver Vise Block Set
$49.99
Protect Receiver From Damage When Clamping
