I picked up a DPMS gas block w/ rails to replace my factory gas block/front sight. I do not know the manufacture of the barrel/upper.
The sight that I removed had 2 pins that I had to drive out. The new gas block has 2 set screws in the bottom of it. Should I lightly drill 2 indents in the barrel so the set screws will "seat" into something??
How do I get the forearm off (M4 type)?? I'd like to give this a thourogh cleaning while I have it this far apart.
As you can tell I am a "little" AR ignorant.
The sight that I removed had 2 pins that I had to drive out. The new gas block has 2 set screws in the bottom of it. Should I lightly drill 2 indents in the barrel so the set screws will "seat" into something??
How do I get the forearm off (M4 type)?? I'd like to give this a thourogh cleaning while I have it this far apart.
As you can tell I am a "little" AR ignorant.