xpenguin

Hi, I am an avid AR builder and to date have built AR's in .22, 5.56, 762 X 39, and 762 X 51. I recently received my suppressor tax stamp and finally got my hands on the new suppressor. It is an Omega and is 30 cal. I bought all the sub sonic ammo I could get and I have found that it will not cycle my bolt. Any thoughts, I am thinking buffer and or spring change.