Threaded Muzzle Device Adapter for Sig Rattler 5.56 PDW 1/2x28

This threaded adapter allows you to install a 1/2x28 muzzle device on the 5.56 PDW version of the Sig Rattler

It comes with the thread protector shown. 

Note: Will not work with Sig SLH and SLX muzzle devices. The muzzle device that comes with the Sig SLH and SLX muzzle devices has a deep countersunk pocket before the threads start. This is meant to cover the tapered portion of the stock sig barrel. This deep countersink causes the threads to start so late that it cannot grab enough threads on the adapter. We prefer the surefire muzzle devices for this adapter.