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AR15.COM
5/30/2009 6:28:00 PM EDT
At today's match I suffered two malfunctions with my rifle's trigger .

After firing the first sighting shoot for the prone rapid I cambered the next round and could not budge the trigger, I cleared the chamber and inspected the trigger group, the range officer came over and checked as well.  At first he thought it might be a primer stuck in there, but all my brass had their primers.

I removed myself and rifle from the firing line and removed the trigger group and safety, no primer, debris or broken parts and the parts still had some oil on them.  I then reassembled the lower and everything worked fine, then I lubed it up more and shot the second relay prone rapid.

Later during the prone slow fire, the same thing happened on my eleventh shot, however this time after clearing the rifle I was able to push down on the hammer and pull the trigger and get it going again.

The rifle is a 2004(ban) RRA standard rifle with 2 stage trigger, standard ban upper, Wilson 1in8" barrel with Wylde chamber, purchased NIB, round count before the match was 391.

Lower is stock, but I just installed a butt stock weight.

The upper has just been modified before this match, with a new NM front sight post and 1/4x1/4 Rear, all RRA.

The ammo is my handloads, Win brass (second loading), CCI400 primers, Speer BTHP match 52gr and 26.0 gr W748 powder, my standard load.  The brass was trimmed to 1.750" and COAL was 2.200".  The only change I did on the load was I switched dies, from RCBS SB .223 to Hornady's Full length and their Micro-Just seater.  No signs of overpressure and they preformed very well.

I don't believe any of the changes I did to the rifle and ammo were the problem, I never touched the trigger group, the trigger has always been very good and consistent.

So anybody have a clue what the problem might be?


BTW despite the problems I had a personal best score of 679.  And scored a brand new shooting mat for $50.00.

Then get home and the rear view mirror falls off my truck.  A 23 year old truck and 100+ degrees, I can forgive it.





6/1/2009 6:32:05 AM EDT
[#1]
We had a gun do the same thing yesterday in a clinic and it turned out to be the shooter was moving the selector switch just a little as he was shooting.  Just enough to prevent firing.  Are you left handed?  I can't say I have ever had a problem with any of my RR 2 stage triggers.

Steve
6/1/2009 7:04:14 AM EDT
[#2]
No not left handed, I had checked that first off.

Last night I did find what I hope was the culprit, a small dark piece of something, I think it hid it's self down in the grip screw hole.
6/7/2009 7:23:04 AM EDT
[#3]
I had the same thing happen with a Jewell. The sear (maybe it was the disconnector?) was not fully engaging. I could push down on the back and hear a click and the trigger would function normally. I took it out, couldn't find anything, put it back in and it works fine now.
6/8/2009 8:39:36 AM EDT
[#4]
FWIW...I had a similar thing happen to me when I installed a RR match trigger in one of my rifles that was a non RR...I called the RR tech people and after they walked me through some items to check they told the problem was more than likely my safety/selector. There is a notch in the selector that when the selector is moved to the "FIRE" position this notch provides clearance for the back of the trigger to pivot upward and allows the hammer to be released.Anyway this notch was not deep enough and would not allow the trigger to pivot upward enough to release the hammer. I deepened the notch ever so slightly, maybe 1/16", and the trigger group worked fine after that. After I removed the trigger from the lower it  took about 10-15 minutes with an electric side grinder and a 1/8" thick wheel, trying it everytime I made a pass or two with the grinding wheel. When it cycled to my satisfaction I cleaned it up and touched it up with cold bluing and it has run like a Timex since then.
6/8/2009 7:48:17 PM EDT
[#5]
What I don't get, is why do we continue to buy these FCG's.  And why does  RRA continue to sell them, just to replace them, or have you send the complete lower back for adjustment??  This makes no sense.
Nor does it make sense to buy one from WOA or send it to Bill Springfield to fix.  Both appreciate the work and  I hope they get it.  But why?  
 ARFCOM is full of info on this FCG and most of it, is about problems.  Less so about other Mfgs.
I like RRA parts and plan on buying more.  I just don't get this FCG issue, it seems simple.
458
6/11/2009 2:12:09 PM EDT
[#6]
I have installed many RRA triggers in lowers of several manufactures over the past 10 years or so. I have even modified the RRA's to rival the Giesele (sorry about the spelling)! Never a problem!

In the past year, I would suspect that demand is over shadowing quality in triggers, selectors and lowers. Remember, all of these components must meet specs in order to function properly. In the end, I'll bet it's RRA who comes out smelling like a rose!

Example. Put together a few rifles using Areo Precision lowers in the last six months. I had to modify grip screws and such to get everything to work. I would also expect the quality to be slipping in many other GI parts. After all, in times like this, I'll bet even the seconds are being sold to the unexpected courtesy of President Obama !

Dave McGrath