Description
We are making new HK21 barrels to fit the new kits that are now currently in progress at our shop.
- COLD HAMMER FORGED BARREL blank sourced from a United States military supplier
- 4150 Chromoly Vanadium Steel – (Mil-B-11595e certified)
- This is for the modern HK21E model without pin
- Complete with plastic handle
- Fluted Chamber as in the originals
- 1 x 10 Twist Rate
- 22.5 inches long
- Thread pitch is the original German – M15  x  1 (we offer free custom threading on barrels to fit customers existing silencers, just ask)
- Chrome lined
- Inspected at 100x magnification before release
- AMS 2460 process standard
- AMS-QQ-C-320 process standard
- 1.2.2 of MIL-STD-171 process standardÂ
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