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Mitch1352
02-16-12, 07:53
The gun is a Colt AR15A2 Sporter with 16 inch barrel. When I shoot my can on it, the retaining pin gets horribly bent, to the point of having to use pliers and a hook-type tool to pull out enough of the pin to get with the pliers. Any ideas on a fix?
5pins
02-16-12, 08:22
This is a common problem with the Colt sporter AR’s and has nothing to do with the suppresser. I think the only real fix is to replace the carrier.
Todd.K
02-16-12, 10:58
Do you have a normal carrier or is it the half moon?

What buffer?

Is your action spring in spec?
Javelin
02-16-12, 11:16
This is a common problem with the Colt sporter AR’s and has nothing to do with the suppresser. I think the only real fix is to replace the carrier.

Do all Colts have this problem?
Mitch1352
02-16-12, 11:26
The rifle is 20+ years old and has the 2 different takedown pin sizes. The carrier is the half moon and I saw no marks or name on the buffer. The action spring is original.
5pins
02-16-12, 12:13
I think this thread should explain it better than I could.

https://www.m4carbine.net/showthread.php?t=5098
Javelin
02-16-12, 12:56
I think this thread should explain it better than I could.

https://www.m4carbine.net/showthread.php?t=5098

Thanks. Good info there!
Todd.K
02-16-12, 14:47
Replace the half moon carrier if you can with a standard one. If your lower has the sear block that prevents a standard carrier I would consider selling it to a collector, then buying a new one with standard pin sizes and carrier.

I would also put a new action spring and H2 buffer in it.
Mitch1352
02-16-12, 15:40
Yes it does have the sear block. I will try it with a standard carrier (there should be one in my Noveske CQB 10.5 with Switchblock...which, by the way, is the best M4 type I have ever fired or owned!!! Ok, end of unsolicited Noveske endorsement :-) ). If it does not work, I will remove the 11 tooth AAC mount on it and buy another rifle.
T.Shrewsbury
02-16-12, 16:38
What about grinding down the sear block enough to accomodate another standard BCG? The block will still do its' intended job right?
Just askin'...
...mr.t in TX
WS6
02-16-12, 20:28
Do all Colts have this problem?

Neither of the one's I shoot do. CAR A3, Colt HBAR 6601. Thousands of rounds down-range. Pristine OEM FPRP's.
DeltaSierra
02-16-12, 20:32
Yes it does have the sear block. I will try it with a standard carrier (there should be one in my Noveske CQB 10.5 with Switchblock...which, by the way, is the best M4 type I have ever fired or owned!!! Ok, end of unsolicited Noveske endorsement :-) ). If it does not work, I will remove the 11 tooth AAC mount on it and buy another rifle.

The standard carrier isn't going to work, unless you get rid of that sear block...