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Posted: 1/9/2021 12:01:38 PM EST
I am just going to screw into the FSB to secure my front handguard cap instead of a gas tube. Does anyone know what screw size and if I need to drill out the hole anymore before I tap it? If so what is the proper drill bit?
Link Posted: 1/9/2021 12:19:44 PM EST
No gas tube, no screw, no problem here:


One does need to align the barrel retention nut as though a gas tube was installed for the hand guard parts to fit.

Best of luck with whatever you pursue.
MHO, YMMV, etc.  Be powerful, be well.
Link Posted: 1/9/2021 6:53:54 PM EST
Originally Posted By GrimEReaper:
I am just going to screw into the FSB to secure my front handguard cap instead of a gas tube. Does anyone know what screw size and if I need to drill out the hole anymore before I tap it? If so what is the proper drill bit?
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I used a 12-24 tap and screw, no drilling necessary:





Link Posted: 1/10/2021 2:54:36 AM EST
I used a pop rivet with a small backing washer
Link Posted: 1/10/2021 11:17:13 AM EST
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Originally Posted By eeeticket:
I used a pop rivet with a small backing washer
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I came here to say that....
Link Posted: 1/10/2021 4:12:46 PM EST
[Last Edit: 1/10/2021 4:19:36 PM EST by GrimEReaper]
I got some flat pan head #10 stainless screws and a #10 tap with a bit. I didn't even have to drill it any more. I took a forged front sight post , removed the bayonet lug and tapped holes in the bottom front and back and in the "pin" positions to make it a clamp on front sight.
  ETA all the hex set screws are all 1/8 #8 cup point.
    This 22lr is what I'm cooking up. Barrel is gone to get a trim right now.
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