[ARCHIVED THREAD] - Double Tapping

Posted: 7/29/2005 1:06:03 PM EDT

I have a SBR Colt lower and purchased one of the CMMG Colt 11.5 uppers. It's double tapping every time I fire. It's also feeding a second round and jamming both before the first round is ejected. I don't think the bolt is moving back far enough to cock the hammer but just enough to begin feeding the secound round. Any ideas?

Bryan Perry

Posted: 7/29/2005 1:25:27 PM EDT

[#1]

The double-tapping is more than likely being caused by a worn disconnector. Check the disconnector, hammer, and trigger for wear and replace any that need it.

Posted: 7/29/2005 6:09:20 PM EDT

[#2]

The same happens to my stock Colt AR-15. I'll check those parts too.

Posted: 7/29/2005 7:37:19 PM EDT

[#3]

Check to see if the disco lets loose by holding the trigger back, and letting the carrier slam forward on a empty chamber,

Or

if the disco lets the hammer loose on a very slow trigger release/reset (hammer misses the trigger sear and just strikes the firing pin).

Posted: 7/30/2005 5:32:25 AM EDT

[#4]

when my 6721 did it i found a small peice of blown primer under the disconector........

Posted: 7/30/2005 9:06:17 PM EDT

[#5]

Had the same problem with my Bushy A2/20", it was the hammer on mine. The surfaces that grab the trigger were in horrible shape. Sent it back to Bushmaster twice before they/I found out the problem. It failed the function tests every damn time even after changing disconnectors, very irritating. Now it runs 100%

[ARCHIVED THREAD] - Double Tapping

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[ARCHIVED THREAD] - Double Tapping

[ARCHIVED THREAD] - Double Tapping