Description
The wrench has a C-shaped hook for installing and removing the barrel nut on MK18 handguards, as well as a serrated semicircular section for the castle nut that secures the buffer tube. Note that it does not fit all castle nut types (e.g. Maxim CQB and Fortis).
The handle has a square hole that lets you attach a ratchet for better torque and leverage. Compact design that fits well in a tool kit.
Features
- For castle nut and MK18 handguard barrel nut
- Square hole for ratchet/torque wrench
- Compatible with 1-3/8" OD four-slot nuts etc.
- Made of carbon steel
- Weight: approx. 105 g
A practical and affordable tool for anyone building or maintaining an AR-15.

