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MASTER AR-15 SHIM KIT Reviews & Ratings

Kit includes all the shims needed to index 1/2" & 5/8" muzzle breaks or flash hiders as wells as AR-15 barrel nut.

Shims for 1/2" threaded muzzle devices
Shims for 5/8" threaded muzzle devices
Shims for AR-15 style barrel nut

CONTENTS

x8 .745 X.510 X.002 Stain Steel Washer

x8 .745 X.510 X.003 Stain Steel Washer

x8 .745 X.510 X.004 Stain Steel Washer

x8 .745 X.510 X.008 Stain Steel Washer

x4 .745 X.510 X.010 Stain Steel Washer

x4 .745 X.510 X.015 Stain Steel Washer

x4 .745 X.510 X.030 Stain Steel Washer

x8 .745 X.635 X.002 Stain Steel Washer

x8 .745 X.635 X.003 Stain Steel Washer

x8 .745 X.635 X.004 Stain Steel Washer

x8 .745 X.635 X.008 Stain Steel Washer

x4 .745 X.635 X.010 Stain Steel Washer

x4 .745 X.635 X.015 Stain Steel Washer

x4 .745 X.635 X.030 Stain Steel Washer

x8 1.170 X 1.005 X.001 Stain Steel Washer

x8 1.170 X 1.005 X.003 Stain Steel Washer

x4 1.170 X 1.005 X.007 Stain Steel Washer

See all of our AR15s and AR15 parts here.

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Excellent value.

Overall I'm very happy with this product. The case is better made than I expected. My only complaint, which is very minor, is that the shims shipped in bags and not the case.

Would you recommend this? Yes, I would recommend to a friend

by CLINTON SHARP on November 13, 2025

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Nice to have

All shimes in one kit....

Very useful for guns other than an AR

The AR barrel nut shims that are included in this kit are also a perfect fit for use on a FN-FAL as a barrel shim to perfect the barrel timing.