Description
RCM HK21 Barrel
RCM HK21 are crafted from 41V50 CHF blanks and fully nitrided for optimal corrosion resistance and aesthetic appeal. These barrels are the most cost-effective option to finish your HK21/FMP or HK11 build. You'll only need to add your own parts included in your HK21 parts kit to complete.
Compatible With:
- HK21, 21E, and FMP HK21's
- HK11 & 11A1
Specifications:
- Thread pitch: 15x1
- Material: 41V50 CHF
- Twist rate: 1:10
- Length: 17.70"
- Finish: Fully nitrided
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