AR-15 MK18 Handguard Barrel nut wrench Castle Nut Wrench Gunsmith Tool

This Armorer Wrench specifically designed for the Castle Nut/ Buffer Tube / MK18 Handguard Barrel nut.

1. MK18 Handguard Barrel Nut Wrench: The C-shaped hook design on the wrench head is specifically designed to installing and removing the barrel nuts on the MK18 handguard.
2. Castle Nut Wrench: The serrated semicircular section at the top is specifically designed for installing and removing the castle nut that secures the buffer tube. * Does NOT fit all castle nuts (e.g., Maxim CQB, Fortis Mfg)*.
3. Torque Assistance: The square hole on the handle allows for attachment to a ratchet wrench, providing greater leverage and torque when dealing with rusted or tight nuts.
4. Versatile Compatibility: Compatible with 1-3/8-inch OD four-slot nuts, DIN 1804 nuts, and select shock absorber adjustment nuts.
5. Portability: Compact design, suitable for carrying in a tool kit.
6. Material: Made of carbon steel.
7. Weight：105g.