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Does This Rifle Need to Be Shimmed? No Play!

This is a discussion on Does This Rifle Need to Be Shimmed? No Play! within the Accuracy forums, part of the M14 M1A Forum category; I recently purchased a Socom CQB and I disassembled it yesterday in order to give it a 'once over'. I was going to add a ...


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Old May 18th, 2017, 10:28 AM   #1
Platoon Commander
 
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Does This Rifle Need to Be Shimmed? No Play!

I recently purchased a Socom CQB and I disassembled it yesterday in order to give it a 'once over'.

I was going to add a shim to the Front Band, but immediately noticed that there was Zero play in it.

Should I leave it alone? There doesn't appear to be any play, so would the Shim help at all?

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Old May 18th, 2017, 10:42 AM   #2
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Define "play"
rotational or fore and aft?

Shims are used to get the gas cylinder lock to time correctly and remove any fore and aft play.

Peening the splines is used to remove any rotational play.

pg

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Old May 18th, 2017, 11:17 AM   #3
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find a 1/16 allen wrench or drill and stick it in the gas cylinder hole and see if it lines up with the barrel hole.that will tell you if you need to shim.

watch tony ben videos to see

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Old May 18th, 2017, 11:31 AM   #4
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No.

Shoot it first. The pounding on the gas plug will pull the cylinder forward against the lock. Then check to see if the front band rattles.

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Old May 18th, 2017, 11:32 AM   #5
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How does it shoot like it is?

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Old May 18th, 2017, 11:48 AM   #6
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Check gas cylinder hole if it is aligned then take it to the range and put some copper in that barrel. Then see what play you have. Make sure to grease the rifle according to the teachings of "Tony Ben the Wise"

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