This WheelerEngineering Delta Series AR-15 Upper Receiver Vise Block is a vitaltool that enables the user to securely clamp an upper receiver into abench vise without fear of crushing, twisting or damaging it in orderto perform critical assembly, disassembly or maintenance tasks. It isideal for use in torqueing barrel nuts to the proper spec, attachingor detaching a muzzle device, and is even useful for cleaning arifle’s bore properly from the muzzle end with a cleaning rod.Manufactured from durable, solvent resistant black polymer, the clampis compatible with A2 Uppers with an Integral Carry Handle as well asA3 Flattop Upper Receivers. Includes a Polymer Internal ReceiverInsert to protect the receiver from crushing when the clamp istightened, and also a Gas Tube Alignment Pin for ensuring a barrelnut is properly aligned to allow clearance for the rifle’s gassystem. Features Non-marring polymer construction Gas tube alignment pen Included internal receiver insert to prevent crushing
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