It's been a while since I've put an upper together. I had enough parts to maybe finish a whole ar pistol and or sbr upper...
I know I need a carbine gas tube but what gas block "should" I throw on here so I can use this plastic a2 style hand guard? I have an SLR adjustable low profile one that I was planning on switching with a Bcm I use for suppressed hunting....
I think i have the delta ring, barrel nut
Is it correct I'm missing a gas tube, roll pin, gas block and or whatever that washer cone cross shaped thing that holds the muzzle end of the hand guard in? I couldn't remember if that is something I can add to any gas block or it's built in to certain ones.