mtrmn

Don't know if this has already been posted but here's a little info I found https://docs.google.com/spreadsheets/d/1tXunBDX5Gaz87BqxwNxDUlWNK9nEv-cZEQoLq2JXXrk/edit#gid=766121382

Thank you for this update

Not looking for anything in particular, just making sure I'm not sending people on a wild goose chase if I tell them to get an Armalite buffer kit or gas tube. They've always LISTED parts even though they may be out of stock. Right now they don't even have a reference to parts anywhere on their website.

I'm sorry if I missed the announcement somewhere. Has Armalite stopped selling parts? I was just on their site about 3 weeks ago and all the parts were there, now nothing.

The RRA polymer mags feed a lot more smoothly in mine than the steel FAL mags, although the steel mags don't present a problem. They are made by Thermold and both the RRA and Thermold FAL mags are identical far as I can tell. They are worth the money but they may also require a bit of material removal to make them drop-free in your gun. I assume they ARE drop-free in the newer RRAs but I don't have one of those to compare. Mine is an old Bushmaster BAR10, 20' bbl, fixed skeleton stock with the non-removeable carry handle. My bolt broke the tail off once and I had to buy a new RRA complete BCG. The new bolt had a larger diameter tail. When I bought my suppressor I also ordered Slash's heavy buffer and spring from Heavybuffers.com and it performs admirably with or without the suppressor. This thing has very good accuracy potential and is pretty reliable function-wise. Mine has a few drawbacks. The charging handle is held in place by a spring loaded detent ball on top of the handle. The hole in the upper for the detent to fall into was too shallow and the handle would slide back sometimes during firing. I used a drill bit through the underside of the upper to deepen that hole a bit. It hasn't done it anymore but I haven't shot it a whole lot since the repair either. There is no provision for a normal latch. The ambi mag release is extremely hard to push from either side. The weird design makes it hard to improve the function without doing unreparable damage if I screw up, so I haven't made any real attempts to improve it. The carry handle being non-removeable is a PITA. I'm using a carry handle scope mount which puts the scope way too high for comfort but I deal with it anyway. I also have an old handle mounted Armson OEG made by Trijicon that works extremely well and is much lighter than the scope I have on it now. Only escape from the carry handle is to put another RRA upper on it and I don't want to invest any more money in it. Also I'm told that no handguards will fit this thing except RRA, and I'm not totally sure RRA would fit this old design gun. Pics are SXS old and new bolts, with Armson OEG, 100 yd group with the OEG and Brown Bear ammo,

OK. I don't see a way to edit my post above, but after taking time to READ THE ENTIRE THREAD I realize most of the problem with the buffer/retainer contact has already been taken care of. My apologies for not doing my homework. However, a quick fix would be to cut the buffer face if you have access to the equipment or know someone who does.

Possibly true, but if the problem is the buffer contacting the retainer during operation the 2 available cures are in this thread:

I'm very late to this party, but I got something to say anyway. When you lube that BCG it needs lube INSIDE where the gas rings are as well. I've found that a few drops in the exhaust ports on the side of the carrier every 10-20 rds or so works wonders during breakin.

I liked my Glock 19 so much (and it's old, like gen 2 or some such) that it replaced a Detonics Mk VI combat Master 45 as my EDC. This was about 1990 or so. I added night sights and had 1 problem with the gun very early on. It fired when I pulled the trigger, then it would fire again when I let off the trigger. Sent it to Glock and it came back fixed. Don't know what was wrong. No problem since then.

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I would replace that. JMO I'm assuming this is a used gun? That particular part needs to be well lubed. Probably best with grease. I've replaced a few of those in AR15's and it made a difference in smoothness of movement when cycling by hand.

Simple enough. Now I understand more about the reasons behind the round ejectors.

I have seen this discussed on other forums and it seemed to be narrowed down, in at least one case, to be dependent on which side of the magazine the round came from. If firing from a full mag, rounds 1,3,5 had about the same POI and rounds 2,4, had a different POI. This possibility could be eliminated by only loading one rd in the mag at a time so that every shot originated from the same side of the mag. If the split grouping went away then that would be the likely cause. I don't know if or how the problem ever got fixed however.

Tried a heavier bullet? Just a thought.

Just need to add this: Make sure there's no tape between the buffer and the retainer. The retainer must contact the buffer and not the tape for this experiment/measurement to work.

This is a good idea to be on the safe side. Tape on the face of the buffer to see if that's enough to make contact with the bolt carrier and push the buffer away from the retainer. Then you can measure the tape thickness to see how much you need to cut to break contact with the retainer. However, if you do cut the buffer unnecessarily it won't effect the gun's operation. I can use the cut down buffers in any AR15 I have, even those that don't need that modification, without any adverse effects.

You're welcome. Pretty sure you are right and your problem was self-inflicted by mis-matching lowers and uppers. There are no standards between brands of the large frame ARs and by forcing the fit with a file you probably did move the upper too far forward. My remedy will allow it to work, and you can still use the same buffer next time you swap uppers. Maybe I should have patented this...🤔

Looks like the annealing process on the case went awry.

Read this thread for more solutions to this problem: ETA: screwing the buffer tube in more will not fix this. The hole for the buffer retainer would have to be re-located or the aforementioned offset retainer installed.

PSA build. 16" Faxon pencil, .308, 1/10, "mid length" requiring 12 -1/16" gas tube. Kaw Valley 5.6 oz buffer with Sprinco orange spring. 0.093" gas port in a .750" journal.

Looking at this thread I remembered that I never notified y'all about my Faxon 16" pencil bbl. .750" journal, 3/32" drill barely fits, making the port 0.09375".

All I can tell you is that if the barrel, BCG, and buffer tube don't share the same concentric centerline then either the upper or lower receiver is probably machined out of specs. In other words you should be able to draw a straight line from the center of the muzzle all the way through the gun to the center of the rear end of the buffer tube. From what you have described I would say that probably the threads in the lower receiver may be off just enough to cause the buffer tube to not properly align with the BCG. Or the buffer tube could possibly be bent, but the problem didn't completely go away when you changed the buffer tube. I'm just throwing this out there based on very limited experience with out of spec parts in the past. I do NOT have the level of knowledge these other guys have, so YMMV.

Thanks to all for the compliments. My sincere apologies to the OP for inadvertently hijacking your thread. I should have started one of my own.

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Ours has quit selling guns but still get ammo. I've heard tell of some walmarts that sold reloading supplies but never witnessed it.