The barrel nut wrench works to tighten both the 556/308 Switch barrel nuts as well as the Night Rail. The Night Rail comes with a tool, but the Switch rails do not. You can use the standard 3 prong DPMS tool for the 308 and a standard AR-15 spanner wrench for the 556 Switch rail. Please follow proper Switch installation procedures.
Features:
- 4130 steel hardened to 38-40 RC
- 556 Spanner wrench
- 308 DPMS barrel nut compatible
- Both 1/2 & 3/8 square
- Black oxide coated
- Made in the USA!