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Home > Upper Parts

GemTech Precision Shim Kit

Part Number GT-PSK
review 9 Review(s)
5
GemTech Precision Shim Kit
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$5.49
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Description
This shim kit is for mounting flash hiders, muzzle brakes and suppressor mounts.  Crush washers and split-ring washers can cause canting of any brand of muzzle brake or suppressor.  Replace those crush washers with a precision-made set of GEMTECH shim washers for perfect alignment and timing. 

Available in 5/8x24 for 7.62 rifles such as AR-10 type carbines, or 1/2x28 for most 5.56mm and 6.8 caliber carbines.

Specify which size you need, and you'll be shipped a set that will work with your rife.
Customer Reviews View All Reviews
Rating best price on the web
 
So I almost got this off amazon, glad I didn't I would have paid three times the price! These guys shipped out quick too. Shim kit is perfect, well packed. Will buy again.
  Did you find this helpful?    5 of 5 Found Helpful
Reviewed by:  from NY. - 4/18/2016
5/5
Rating Great Shim Set
 
These are great, glad I found these cheaper than on amazon! The seller on amazon was selling the same set of shims for about sixteen bucks. These are great for getting the right look on my flash suppressor.
  Did you find this helpful?    3 of 3 Found Helpful
Reviewed by:  from NorCal. - 3/21/2016
5/5
Rating perfect
 
I needed a few shim kits for some rifles and these are perfect. Have enough shims in one kit to do a couple rifles. Packed nice and Harrison shipped out fast. Oh they also already provide a pack of shims with each muzzle brake, so don't buy extras unless you need too.
  Did you find this helpful?    3 of 3 Found Helpful
Reviewed by:  from fresno. - 2/6/2015
5/5
Rating don't be scared
 
First I ordered on amazon from some seller, then realized I had paid more than twice the price. So I returned the order which was an issue. Amazon tried to charge almost 7 bucks in return shipping, then agreed to cover return since I was Prime. Then only refunded me half the money! So I had to chat with them again to get the money back. Real waste of time, should have purchased here first. LESSON LEARNED!
  Did you find this helpful?    2 of 2 Found Helpful
Reviewed by:  from Escondido . - 8/6/2016
5/5
Rating Must have for proper mounting of muzzle devices
 
Anyone working on ARs needs a few of these in their kit.
  Did you find this helpful?    2 of 2 Found Helpful
Reviewed by:  from TX. - 11/7/2014
5/5
Rating Perfect
 
good price, the shipping options were perfect. I dont need super fast and like to save money, so very happy. Real friendly folks, wanted to call and see if they had it in stock before i ordered. Thanks!
  Did you find this helpful?    1 of 1 Found Helpful
Reviewed by:  from FL. - 8/15/2016
5/5
Rating Cheap
 
Cheaper than amazon, hard to do. Fast shipping.
  Did you find this helpful?    1 of 1 Found Helpful
Reviewed by:  from Cherry point. - 6/15/2016
5/5
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