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X-SHIM AR-15/M16

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Product Description


By simply installing the X-SHIM on the Rear & Front lugs on the upper receiver, the "slop" found on many rifles can be reduced or eliminated. Removal of the slop can result in increased accuracy and more reliable feeding.

The X-shim will work with the following platforms.

  • AR-15 rifles
  • M-16 Full Auto rifles


Included in the kit are the following items.

  • Front set for AR-15 / M-16
  • Rear set for AR-15 / M-16
  • Set of gauges to check tolerence

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Product Reviews

Previous | Showing reviews 6-10 of 13 | Next

  1. Easy to install !! 5 Star Review

    Posted by on 7th Dec 2016

    Works like a charm ! It will take the rattle out and change the whole feel of the gun for the better! Worth the Money for sure !!! Thanks Varmintlight !!!

  2. Xshim 5 Star Review

    Posted by on 29th Nov 2016

    The rear lug on the upper receiver was wobbled a little bit which made the upper and lower Fitloose. Instructions are easy installment was a breeze works exactly like it says fitment now is tight as it should be!

  3. BEST FIX FOR AR15 SLOP 5 Star Review

    Posted by on 27th Jun 2015

    I have an Adams Arms blemish model that has the ABSOLUTE WORST amount of slack ever found on a rifle! I have tried everything for it; the accuwedge, an oring on front lug (which is better than accuwedge except for constant replacement). Everything except for the pin shims and tensioning pin. This is by far the best product for the fix. These shims won't break or dry rot, there is no chance for it to get in the way of internal operation, they don't fall out during cleaning, takedown pin doesn't need a tool to be pulled out, and to top it off it's made in the MOTHERF***ING USA. Enough said.

  4. Amazing 5 Star Review

    Posted by on 15th Apr 2015

    I have a Adams arms upper and a Samson Rail with a m&p lower and this is Amazing no play n I did not have to trim the shims best investment if u have any play hands down.

  5. great product for the AR15 4 Star Review

    Posted by on 17th Nov 2014

    The X Shim is a great product. My Windham MPC had some play in the upper to lower receiver fit not bad and i know it does not affect accuracy or function but i like tolerances to be nice and tight. The X Shim is very simple to install and has different size shims to get the perfect fit without putting unwanted tension and pressure on the take down pins like the other products do like the accuwedge. Its very affordable and they seem durable i was a little worried how they would hold up too heat but 500 rounds later some of those rapid fire there holding up great my only grip about them and its not a big deal is that i wish they made them black so they would blend in with the rifle but you cant see them at all anyways unless you push out the takedown pins and pull the upper off the lower so it doesnt matter all in all very good product if you have play between your upper and lower this is the best way to go.

Previous | Showing reviews 6-10 of 13 | Next

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