I thought some of you guys may find this interesting. Sorry for the picture quality, pictures aren't really my thing.
We recently received some well-used Colt 6920s from a training facility that provides high intensity training to law enforcement professionals. These weapons have over 50,000 documented rounds through them. Only a few minor parts and springs have been replaced, and all of the major components are Colt OEM. I haven't had a chance to take one shooting yet, but the instructors from the training facility tell me they still shoot excellent groups. For picture purposes, I tried to pick the worst looking one, but they all looked pretty rough.
-Cade
Clyde Armory
4800 Atlanta Highway
Bogart, GA 30605
(706) 549-1842 Phone
(706) 549-3232 Fax
Just to provide another data point to balance this out a little, I carry a bolt lug from a M4 (RO977, I believe) in the pocket of my cammies that failed at just under 7600 rounds while we were on test.
Doing operational test on weapons has absolutely killed my confidence in almost all firearms to go boom when I need them most.
What no egged trigger group holes they must have been using the KNS anti rotation pins
how many mall ninjas have them and will never ever go through that many rounds in their life time
If you guys want your bolts to last longer, check the back edge of the lugs every cleaning. If you notice that a burr has been raised, take a fine file and take the burr off (just the burr). This will help the bolts last longer and keep the gun running smoother.
After about 90K+ though my Stoner there was a pronounced burr on the bolt lugs which I did the above and it is still firing away w/o issue.
I would like to know what the bores look like on the barrels, 70K+ made the Stoner a smooth bore.
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http://weaponblueprints.com/
Ok, now that I'm not on computers bought with your taxpayer dollars I can see the photobucket pics.
Now way, not a chance, absolutely impossible that those bolts have that many rounds on them. Those lugs are impeccable.
I have seen a lot of Colt bolts with a lot less rounds, and they look far more beat up than that.
Further, last info I have is that colt does not hammer forge their barrels. Button and cut rifling (not sure which colt does) leaves imperfections in the bore. those imperfections are covered up by chrome, but leave small air pockets which heat and cool (expand and contract) every time a round is fired. This causes the chrome to flake off. Their barrels are ~supposed~ to last 10k rounds, but SOF has found they need replacement around 6k. There is absolutely no way that a chrome lined barrel that is not hammer forged has lasted 50k rounds. Don't even get me going about the flame-cutting that happens to the gas ports...
This is beyond absurd. 50k rounds through a 5.56 barrel. Seriously? 5.56 is about 62,000 psi and it has a hard copper jacket. A 24,000 psi 22lr barrel would shoot out at 50k rounds - soft lead, hard steel is like soft water and hard rock. Endstate: grand canyon.
Drink the cool-aid if you want, but this is not even close to reality.
OP, this isn't a personal attack. Perhaps you were given bad info?
First let me say that I'm glad to see Clyde Armory posting here. They are on the very top of my list of dealers to deal with, especially on Colts and doubly on NFA items.
I concur that 50k on a single bolt or barrel seems unlikely, and I'd like to hear more about whatever documentation or maintenance schedules/records were kept on these.
I'd still take a 50k Colt over a NIB Oly all day every day, and I'd pay extra for it if it came from Clyde.
Speaking of Clyde Armory... has anyone seen the 7/8 scale copy of Cook and Brother Armory Andrew Clyde is currently building?
This will be the new home of Clyde Armory and I believe it will open this December. Check it out when you can.
Back on topic... I have handled several of these pre-owned 6920s and they do look very good.
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smcharchan wrote:Just to provide another data point to balance this out a little, I carry a bolt lug from a M4 (RO977, I believe) in the pocket of my cammies that failed at just under 7600 rounds while we were on test.
That is nearly exactly the expected life. M4 bolts should be replaced every 5000 rounds.
The KAC E3 bolt was designed to address the weaknesses in the original bolt design. It may be a 25,000 or more round part. If only it was on all rifles.
I got a little more information on these today and hope to get some more soon. I was a little skeptical myself, but we are working on getting the documentation on these rifles.
First off, I messed up yesterday. I said that no major parts had been replaced, but a few have. During the 5 years that these ten rifles were in use, 2 bolt carrier groups and 2 barrels were replaced. I happened to grab one of the rifles with a newer BCG for pictures.
According to the facility that bought them, they put, give or take, 1K through each rifle each month. They were cleaned after every range session. This makes me a little less skeptical, because that averages about a magazine a day per rifle.
Hopefully, we can obtain the documentation sometime early next week and I'll try to get it posted.
ETA: We just got off the phone with the training facility owner, and they are going to send us documentation by serial number.
Clyde Armory
4800 Atlanta Highway
Bogart, GA 30605
(706) 549-1842 Phone
(706) 549-3232 Fax
they must have been using the KNS anti rotation pins 
