I need to sell a couple of my late fathers guns to cover a couple expenses he left for my mother. He had an AR pistol which isn’t my thing. I like aiming, not pointing.
Its 300 blackout and has an M-LOK hand guard. I have never shot it and before I offer for sale or auction I want to be sure its functional and safe. I took it out to shoot it and it won’t cycle another round in the chamber. Probably a problem with the gas block. So I disassembled the thing and sure enough the two screws at the bottom of the gas block are loose and it moved 1/4” forward so the holes don’t line up. I fully seat it and tighten the set screws. I try it again and it still won’t cycle.
So now I have the gas block completely off and I am noticing 2 additional adjustment set screws. One at the front and one on the side. What are these for? I blow in the tube and adjust the set screws only as far as they don’t restrict airflow. Now the stupid thing fouls on the hand guard.
I figured I would just replace this weird gas block with a typical basic one. I take the roll pin out to separate the gas tube from the block and its not coming out. Not sure why it was pinned. I am going to have to get a pistol length gas tube and replace both parts.
What is the deal with this fancy pants gas block? Why does it need all these adjustments with all these set screws? What are the adjustments for? I have put together 6 or so ARs so far and these is the first I have seen a gas block like this.
Its 300 blackout and has an M-LOK hand guard. I have never shot it and before I offer for sale or auction I want to be sure its functional and safe. I took it out to shoot it and it won’t cycle another round in the chamber. Probably a problem with the gas block. So I disassembled the thing and sure enough the two screws at the bottom of the gas block are loose and it moved 1/4” forward so the holes don’t line up. I fully seat it and tighten the set screws. I try it again and it still won’t cycle.
So now I have the gas block completely off and I am noticing 2 additional adjustment set screws. One at the front and one on the side. What are these for? I blow in the tube and adjust the set screws only as far as they don’t restrict airflow. Now the stupid thing fouls on the hand guard.
I figured I would just replace this weird gas block with a typical basic one. I take the roll pin out to separate the gas tube from the block and its not coming out. Not sure why it was pinned. I am going to have to get a pistol length gas tube and replace both parts.
What is the deal with this fancy pants gas block? Why does it need all these adjustments with all these set screws? What are the adjustments for? I have put together 6 or so ARs so far and these is the first I have seen a gas block like this.