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8/28/2010 10:20:24 AM EDT
I took my new M16A4 clone out today for the first time. Here is a pic of it.



I used an Arfcom lower with a Stag lower parts kit ( normally use DPMS kits )
Bravo Company 20" gov profile upper and BCG
Stag A2 stock kit and Metech BUIS ( saving for the Acog )

After only the ninth round the mag catch broke off and the mag fell out. First broken part ever. Mag in the rifle was a "C" product 30 rounder which has a shit load of rounds through it.  Pic of the broken catch



I have put together 6 lowers now and never had a problem till this one. I normally use DPMS LPKs when putting lowers together. I ordered the Stag kit from Bravo when I ordered the upper. I thought Stag is good shit so I ordered it over my normal DPMS kits.  Lesson learned I guess, stick with what you know works. I will now be adding bolt catch parts to my spare parts kit.

I put the 20" upper on one of my DPMS lowers and finished sighting in the upper. It is very accurate even with the Fed m193 I was shooting.
8/28/2010 10:55:56 AM EDT
[#1]
Hm.  First one I ever saw break.  It broke in the weakest/thinnest point.
8/28/2010 11:01:23 AM EDT
[#2]
Wow....might need to pick up some extra LPKs
8/28/2010 11:32:41 AM EDT
[#3]
Bad luck.  I wouldn't write off CMT over a statistical survey of one, I'm sure all makers have had a mag catch break once or twice.  I even bet if you called them, they'd send you a new one.
8/28/2010 11:41:44 AM EDT
[#4]
I am going to call them Monday and see what they say. It is not really a big deal, shit happens and all that. It did brake in the thinnest part. The mag catch is one of the few parts I do not have a spare for.
8/28/2010 11:45:20 AM EDT
[#5]
anyone just sell that part ?
8/28/2010 11:48:29 AM EDT
[#6]
Here you go..  http://www.midwayusa.com/viewproduct/?productnumber=615834

Quoted:
anyone just sell that part ?


8/28/2010 11:53:42 AM EDT
[#7]
I ordered 2 of them from here for spares.

http://www.specializedarmament.com/index.php?
8/28/2010 12:14:29 PM EDT
[#8]
Quoted:
I ordered 2 of them from here for spares.

http://www.specializedarmament.com/index.php?

Kool-aid drinker!
8/28/2010 12:16:53 PM EDT
[#9]
It dose taste good

thats funny cause the only rifle I have that I did not build is a Colt 6700
8/28/2010 12:19:49 PM EDT
[#10]
Be glad it happen at the range
8/28/2010 12:20:18 PM EDT
[#11]
Quoted:
Quoted:
I ordered 2 of them from here for spares.

http://www.specializedarmament.com/index.php?

Kool-aid drinker!


He just hasn't read the "My Colt bolt catch broke this morning" thread yet.  Oh, that's right...

8/28/2010 12:21:45 PM EDT
[#12]
Shit brakes on Colts also.
8/28/2010 12:23:08 PM EDT
[#13]
Quoted:
Be glad it happen at the range



No kidding

8/28/2010 12:46:51 PM EDT
[#14]
I broke my BUIS  on my new at the time carbine.
I was mad since I  didnt have a optic to use.
Plus I was at the cabin
8/28/2010 1:13:19 PM EDT
[#15]
Quoted:
I broke my BUIS  on my new at the time carbine.
I was mad since I  didnt have a optic to use.
Plus I was at the cabin

You should always carry a carry handle in your range bag or AR case.
8/28/2010 1:36:44 PM EDT
[#16]
Can you get close-up, in focus pics of the break?  I'm interested in the grain pattern.
8/28/2010 2:27:19 PM EDT
[#17]
Quoted:
Can you get close-up, in focus pics of the break?  I'm interested in the grain pattern.


This is the best pic I can get with my gear. It appears to be cast of some kind which they probably all are. Almost looks like the crack has a parked finish in it. Could have been cracked before the install maybe.



8/28/2010 2:29:48 PM EDT
[#18]
Quoted:
Quoted:
I broke my BUIS  on my new at the time carbine.
I was mad since I  didnt have a optic to use.
Plus I was at the cabin

You should always carry a carry handle in your range bag or AR case.


This! And make sure the handle is zeroed at 25 yds.

8/28/2010 2:32:45 PM EDT
[#19]
Stag will make it right no questions asked. I broke a hammer pin using a .22 kit and they sent me a new one free of charge. They didn't even ask me how it broke. They have excellent CS.
8/28/2010 2:33:39 PM EDT
[#20]
Quoted:
Quoted:
Can you get close-up, in focus pics of the break?  I'm interested in the grain pattern.


This is the best pic I can get with my gear. It appears to be cast of some kind which they probably all are. Almost looks like the crack has a parked finish in it. Could have been cracked before the install maybe.


http://www.pix8.net/pro/pic/15359E9goP/11555132.jpg


Yep, definitely a bad part. Forcing it onto the shaft broke it, and they finished and used it that way. This makes me want to take a look at my mag catches when I get home - I'm out of town. If you have one that's cracked around the shaft, replace it.

8/28/2010 3:08:24 PM EDT
[#21]
Interesting. Funny thing how the mob claims that DPMS is crap. I've built a number of lower with DPMS LPK's and have yet to have any issues either.
8/28/2010 3:10:47 PM EDT
[#22]
Exact same thing happened to me after about five mag releases. It was a stag part as well.
8/28/2010 3:13:47 PM EDT
[#23]



Quoted:


Shit brakes on Colts also.


How short a stopping distance?



Seriously, it would be cool if we had an ongoing thread posting what shit we broke on our ARs. No BS, no discussion, just posts with parts breakages.



 
8/28/2010 3:22:22 PM EDT
[#24]
Quoted:

Quoted:
Shit brakes on Colts also.

How short a stopping distance?

Seriously, it would be cool if we had an ongoing thread posting what shit we broke on our ARs. No BS, no discussion, just posts with parts breakages.
 



A thread with that kind of info would be nothing but a flame fest on this site.Would be cool to have one like that though.

8/28/2010 3:59:18 PM EDT
[#25]
Quoted:
Quoted:
I broke my BUIS  on my new at the time carbine.
I was mad since I  didnt have a optic to use.
Plus I was at the cabin

You should always carry a carry handle in your range bag or AR case.


For what?  The chance my Aimpoint AND Troy BUIS both go down ?  In that case I'll use the Aimpoint as a rear ghost ring.
8/28/2010 4:55:26 PM EDT
[#26]
Quoted:
anyone just sell that part ?


M&A Parts
8/28/2010 4:58:25 PM EDT
[#27]
Quoted:
Quoted:
Quoted:
I broke my BUIS  on my new at the time carbine.
I was mad since I  didnt have a optic to use.
Plus I was at the cabin

You should always carry a carry handle in your range bag or AR case.


For what?  The chance my Aimpoint AND Troy BUIS both go down ?  In that case I'll use the Aimpoint as a rear ghost ring.

In that guy's case, he didn't have an optic. Reading is fundamental.
8/28/2010 5:03:11 PM EDT
[#28]
I recently put together a new lower with a brand new Spike's LPK. The mag catch has a crack in the same spot where yours broke, but it did not break in half.  I still need to get a new one but it doesn't have an upper so it is not super important.  I didn't notice it until it was all together, are you sure it wasn't cracked/split prior to installation?



Ian
8/28/2010 5:11:10 PM EDT
[#29]
Quoted:
I recently put together a new lower with a brand new Spike's LPK. The mag catch has a crack in the same spot where yours broke, but it did not break in half.  I still need to get a new one but it doesn't have an upper so it is not super important.  I didn't notice it until it was all together, are you sure it wasn't cracked/split prior to installation?

Ian


It could have been cracked already but I don't know. I did not look it over very good before putting it in the lower.

8/28/2010 7:27:55 PM EDT
[#30]
Quoted:
Quoted:
Quoted:
I broke my BUIS  on my new at the time carbine.
I was mad since I  didnt have a optic to use.
Plus I was at the cabin

You should always carry a carry handle in your range bag or AR case.


This! And make sure the handle is zeroed at 25 yds.



We zero ours at 36yds in the Corps. That way its dead on at the 300 meter setting.  The  army might do theirs at 25 yds. but that only puts you on at 200 meters.  We do the 300 then if we gotta go to the 200 we switch it to 8/3-2 for A2s and 6/3-4 for carry handles
8/29/2010 5:19:11 AM EDT
[#31]
Quoted:
Stag will make it right no questions asked. I broke a hammer pin using a .22 kit and they sent me a new one free of charge. They didn't even ask me how it broke. They have excellent CS.


This. I had the same experience with a non-resetting trigger/disconnector. Stag is GTG.
8/29/2010 6:26:36 AM EDT
[#32]
Damn, never seen that before. Freak occurrence.  You need to go play the Lotto today.
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