HK MP5, 94 & MP5K, SP89 9mm - Complete Bolt HeadEach bolt head incorporates a mixture of the finest quality US made & factory German HK parts. Making up a new complete bolt head ready for use. Ideal to replace out of spec bolt heads, worn out or old generation bolts. Fits on semi or full auto 9mm's pistols or rifles. Each bolt head is made from a solid billet with the new Action 3 roller retainer spring and all upgraded "F" style specification and enhancements. Made from a proprietary enhanced steel material that is superior to any previous bolt heads or any that are currently available.Each 9mm MP5 & MP5K Bolt Head Features:
- Bolt Head - US Made made from an enhanced steel
- Extractor - US Made to true F specs of enhanced steel
- Extractor spring - (German HK copper extractor spring) - Genuine HK
- Roller retainer spring upgrade - Genuine HK German
- 8mm rollers (pair) - Genuine HK German
- Roller retainer pin - Genuine HK German
- MP5, MP5K
- SP89, HK94
- Zenith, POF, Clones & Custom builds
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Bolt gap Is .016
My bolt gap using this bolt took it to a .016 to a tight .018 Disappointed. My pof bolt is is a solid .014.