Milsig M17 Complete Regulator

Replacement regulated ASA HEAT CORE Body for Milsig M17 Important Notice: This is an regulated HEAT CORE body set up to 20 joules. It does includes complete regulator and Pressure Release Valve . It is what M17G3 and M17A2 come with. It is used together with a softer main bolt spring and lower input pressure (under 20 joules) to maintain a balanced system. Failure to do so may result in improper cycling or malfunction of the full-auto mode. For set up over 20 joules stiffer main bolt spring and sear springs are required. it is also nessessary to readjust Pressure Release Valve.