- Works with HK417/MR762 barrels and receivers
- Ultimate tool for barrel nut installs
- Excellent for removing stubborn/seized barrel nuts without damaging upper
- Designed for muzzle device installs and will not damage index pin
- Machined from 4140 Ordnance grade steel
- Durable Black Oxide finished for years of use
- Will not mar or damage exterior of upper receiver
- Can be installed horizontally or vertically in bench vise
- Made in the USA
