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5/9/2004 5:12:10 PM EDT
Ok, outline

EA J15 lower four posit stock, not Heavy buffer
DPMS upper 1/8 twist bbl. 11.5 with F/S DPMS internals
Gun recnetly cleaned and well oiled...bought used at gunstore Number 6 AR I currently own First time shooting since purchase.
Guns shown below.



OK, here's the deal...out at the range today...shooting about 100 rounds of 55 Gr Winchester White box...gun shoots 100% with some slow and rapid fire.

Photo with mag:


Photo with out mag:(fired shot in chamber--photo of result)


Switched over to 55Gr WOLF. guns sarts doing this...I tried changing mags and even shooting without a mag Note photo's Not one shot cycled correctly after switching to WOLF


Bolt carrier seems to be hanging up on Hammer? I dunno... Sadly I couldn't swithc back to the WINCHESTER stuff because I shot it all. And I couldn't try the Wolf in another gun...I only brought along this one AR. I will try the remaining WOLF ammo in another gun in the future. Please don't give me flak about WOLF ammo..this is the first time I've had a problem with it. THANKS FOR YOUR HELP.
5/9/2004 8:05:31 PM EDT
[#1]
FAQ II, under Bolt carrier "catching" or "hanging up".

P.S. Your going to catch hell from Tweak since he spend the time compiling all the needed information to solve 99% of the problems found on the rifles into a easy to follow data base, and you didn't spend the time to read it before posting your problem here.

Like Tweaks once stated, Read, then post!!!

5/9/2004 8:40:26 PM EDT
[#2]
I rarely give people hell.
5/10/2004 8:10:05 AM EDT
[#3]
Yikes...calm down guys...I appreciate your help....but if you are gunno get grumpy...I'm over it...
5/10/2004 8:26:45 AM EDT
[#4]
My guess is either the firing pin collar is too large [cross diameter], or the top of the hammer’s contact pad is too high and catching the firing pin collar on the carrier’s way forward.

The firing pin collar should be flush (or slightly smaller) that the bottom edge of the carrier (were it makes contact with the back of the carrier).  If the firing pin collar checks out, then move onto lowering the top of firing pin contact pad on the hammer (the area that is catching the collar).

5/11/2004 6:44:41 PM EDT
[#5]
Colt_sporter,

I hope I didn’t scare you off.  Even once in a while I have a bad day at work and it will flows over into my posts (it happens when you have Professional idots/ Grown emotional retards working for you).  Sorry If I came off as a total ass hole and gave you the wrong impression of myself and the forum.

Did you get the rifle up and running, or are you still having problems?

Dano
5/22/2004 7:35:16 PM EDT
[#6]
A very common issue with 11.5-inch barrels.  Can usually be traced to manufacturers using the same gas port size (too small) as they do on their 16-inch barrels.  Port size too small=short strokes, Too large=beats the hell out of the weapon.  I have spent more $$ than any man alive trying to get short 11.5-inch uppers to run.  Lot's of controversy over the causes, but lessons learned tell me it's probably a gas port issue.  Search the FAQ, and you will find the proper gas port diameters for 11.5-inch barreled weapons.
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