Premium Slick Heavy Duty Barrel Nut Shim Kit With Twenty Badass Precision Pieces For Flawless Rail Alignment And Rock Solid Torque On 556 And 223 Rifles

Precision 5.56 rifle barrel nut shim kit for rail upgrades
✔️ 20 stainless shims.001 to.020 inch for exact rifle spacing

This twenty piece barrel nut shim set delivers controlled gap management when you install a free float handguard onto your upper receiver. Gunsmiths rely on these precision washers to dial in the correct torque curve, eliminate wobble, and lock the barrel in place without stressing the threads. You stack the exact thickness needed to hit factory specs every time.

✅ 304 stainless steel construction resists corrosion under heavy range abuse
✅ Inner hole measures 1.005 inch outer diameter sits at 1.170 inch
✅ Assortment includes four pieces each of.001 through.004 inch plus two of.010 and two of.020
✅ Clearly labeled layers prevent guessing during critical rail alignment steps

💡 Which precise spacer combination lets builders achieve optimal headspace tolerance on 5.56 upper receivers?
- Stacking calibrated washers is a handy practice when you measure clearance gaps during assembly.
- Add thin stainless rings until your micrometer hits the target value before torquing the castle nut.
- Mix thicker increments to compensate for barrel tenon variance and lock your gas system securely in place.

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