- New Barrel Nut Shim Kit Ffor Free Float Handguard/Quad Rail
- Peel Washers Fit Between The Barrel Nut And Upper Receiver
- Does Not Work With .308 Cal
- 5 Piece In The Kit
- Use Up To 5 Peel Washers To Reach Proper Alignment
- Helps Improve Torque, Timing, Indexing, Alignment Of The Barrel Nut
- Works With .223/5.56 /300 AAC Blackout
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