View Full Version : Recoil spring guide tube and pistol grip question.

February 12, 2009, 01:14

I am a new guy on this forum and donít have experience of building FN FAL. But I think it would be a nice experience to create firearm with my own hands.
I got IMBEL kit with metric receiver. The only information I got so far on FAL build is from this forum, some other online resources and AGI FAL video. I am planning to buy Gunplumber's Guide to FAL soon.
Anyway. I am working on lower right now. I got it cleaned, lubricated and put back together. I swapped HTS for US made ones. I have 2 small problems with a lower.
Than I was removing recoil spring with that special tool I bought, recoil spring guide tube itself started unscrewing from the lower instead of screw, holding spring inside a tube. So I had no choice, but to remove the tube itself, which I understand is not recommended. It seems like tube itself was loose during a military service. I can screw tube back past it last position more than 1/16- 1/8Ē.


As you can see from these pictures, receiver end of tube has that cut from moving recoil spring plunger(?). I actually donít know if such cut is normal. It seems like it should be a screw thread all way on that tube(?). There is a corresponding place inside that lower part of that hole there tube goes inside receiver, there is no screw thread either.
So, I am kind of puzzled with that. If I can reuse existing tube do I have to screw it with certain force? How do I keep it from unscrewing again? Should I use Loctite or something to that nature to keep it in place? Because I can screw tube even with my bare hand past position it was before, do I just trim excess of the tube?

I bought that pistol grip, which has a ridge on a left side to prevent selector moving to ďAĒ position.

Than trigger is pulled, trigger return plunger is moving almost all way to pistol grip post.


Stock pistol grip (on the right) has a cut in a place there trigger plunger goes in. I guess I have to cut little bit of plastic in same place there the stock grip has it or make trigger plunger little bit shorter, which I donít want to do. Does anybody has any experience with that?

Thank you.

February 12, 2009, 07:04
Clean all oil/grease from recoil tube and lower receiver. Screw it back in with red Loc-Tite, ALL the way in until it's tight. It's fine even if the notch doesn't line up.

Remove the material from the pistol grip, not the plunger. I'd check it first to make sure it needs it. Did you put the grip on and try pulling the trigger?

February 12, 2009, 07:42
The threads in the cut seem to be normal, I have one just like it.
Like he said clean & degrease & red loctite.
I was advised to attach the buttstock while the loctite sets. I guess to ensure correct lining up of the tube with the hole in the stock. As it can't hurt & might help this is what I did.

February 13, 2009, 20:13
Thank you for your suggestions.

I am glad; I do not need to replace a tube. It is good. :)
So, I will put tube with red Loc-Tite back in lower receiver until it tight even that notch doesnít line up. Thatís easy.

On a pistol grip issue; I can pull the trigger just like 1/3 of its full movement with a new pistol grip. It is not enough to release hammer. So I will trim that portion of the grip similar to the original one.
That is strange why manufacturer of those pistol grips did not figure it out. Do we have any FALs with less trigger travel than usual? I am just curios.


J. Armstrong
February 13, 2009, 21:26
FWIW, I have always replaced the tubes as described here, but I usually index it. I usually lightly punch a thread or two to help give enough friction to retain the index even when you are tightening the stock nut onto the tube. It is worth repeating that it is recommended that the stock be installed until the loctite sets. This is especially true if you index the tube and it is a little loose as you describe ( pretty normal ) - putting the stock on ensures that the tube is held in correct alignment. The nut does not have to be fully tightened at this point - just enough to bring the stock snug against the lower and hold the tube in correct alignment, not so tight that turning the nut turns the tube out of index. It ain't critical, but.......