Do you know off hand the TDP required clearance between the upper and lower, ie, the slop?
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As per the TM.
1. With the upper receiver attached to the lower receiver, and the pivot pin and takedown pins in place,
perform the following test:
(a) Apply hand pressure to push the upper receiver as far to one side as possible.
(b) Attempt to insert a 0.020 inch thickness gage between the pivot pin lugs or the upper and lower
receivers.
(c) If the thickness gage penetrates to the pivot pin at all accessible locations, repair by replacement of
the upper receiver (see (b) below) or replacement of rifle is required.
2. If the rifle fails the above test, remove the upper receiver and install a "NEW" upper receiver and perform
the test again.
3. If the rifle now passes the above test, it shall be considered serviceable and continue in use.
4. If the rifle fails the test with a new upper receiver, this failure shall be considered a shortcoming. This
shortcoming requires action to obtain a replacement rifle. Once a replacement has been received,
evacuate the original rifle to depot for overhaul.
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Before I really knew anything about the difference between comp. guns and fighting guns I used them. I was lucky enough that I never had mine cause any issues but I have seen them fail and cause major problems.
If it was a competition rifle then I could see where they would be perceived as a nice addition, however on a fighting rifle they are a no-go and I take them out of an dept. rifles where people try to sneak them in.
They are the rifle equivalent of the pistol Shok-Buff. More of a problem than a solution.
Wow this got a lot of replys. Personally I don't see the point in it. Who really cares about some rattle between the upper and lower. Your sights aren't moving without the barrel. I was really just looking for some thoughts on this piece. One of our officer had it in his rifle for qualifications and I had him take it out. Just thought it was giving Mr. Murphy an open invitation to the party.
What I think of the wedge.....
They made it in bright red or orange so that ie reaches out tot he buyer's eyes and who do you know that would not spend $5 to $10 on a upgrade to improve the rifles quality. I wouldn't waist my money.
I left the thread open simply because no matter how many times it's been discussed people need a reminder on how worthless they are. Spend the money on something useful like a good lube or some magazines.
Here's a novel concept: other people will have different preferences than you!
I find the upper-lower slop annoying when handling the gun. I like my gun to feel solid. I have zero expections of any silly claim of increase in accuracy. My Centurion Arms barrel takes care of that anyways.
Oh no, I just spent 2 cents on an o-ring, and the problem is solved. Clearly I am an idiot!
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