Description
Nefarious Arms HK MR556 A3/416 A5 Barrel Nut
Whether replacing a barrel nut or sourcing the best parts for your build, the Nefarious MR556/416 barrel nut is an excellent option. Meticulously crafted in the US to the highest quality standards.
Compatible With:
- HK MR556 A3
- HK416 A5
