Precision tuning for .30-cal platforms
Skip single-use crush washers and shim with accuracy. The PlasmaGal 5/8 × 24 Thread-Alignment Shim Kit includes 20 reusable 304-stainless shims that let you clock muzzle brakes, flash hiders and suppressor mounts on .30 / .308 / 7.62 mm and 300 BLK barrels without over-torque or trial-and-error.
Why upgrade to shims
Ultra-fine 0.025 mm steps – five calibrated thicknesses (0.001″, 0.002″, 0.004″, 0.008″, 0.020″) achieve exact timing with a single wrench turn, no grinding or filing.
Reusable and non-deforming – 304 stainless resists galling and corrosion; the same shim can serve multiple builds and inspections.
Fast, labelled organisation – each thickness comes in an ink-stamped bag for instant selection on a busy bench.
Bench-top multitool – levels barrel nuts, trues Picatinny rails and replaces shim-shell assortments in reloading dies.
Quick reference – rotation per shim*
ThicknessMetric mmDegrees 0.001"0.025 mm9° 0.002"0.05 mm17° 0.004"0.10 mm35° 0.008"0.20 mm69° 0.020"0.50 mm173° Angles calculated for a 5/8 × 24 thread pitch (0.04167″ per turn). Combine shims to obtain any intermediate value.
Specifications
Thread size: 5/8 × 24 UNEF
Suitable calibres: .30 / .308 Win, 7.62 mm, 300 BLK and other .30-cal barrels with 5/8 × 24 threads
Material: AISI 304 stainless steel, satin finish
Contents: 20 shims (4 × 0.001″, 0.002″, 0.004″, 0.008″, 0.020″)
Packaging: Individual labelled bags per thickness + re-sealable zip pouch
PlasmaGal — simple engineering for accurate alignment.
Shim, tighten and get back on target with confidence.