The Trinity Force Upper Vise Block is a great option for AR-style upper receivers when tightening barrel nuts to the proper specifications and attaching/removing a muzzle device. It is crafted from durable black polymer and is compatible with A3 Flat-top receivers, some AR-10 receivers, AR-308 receivers.
NcStar M4/16/AR-15 Armorer's wrench. Multiple tools combined in one package which assists in disassembling/ assembling of M4/16/AR-15 type rifles.
