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HK MR556, HK 416 10.4" 300 BLK Upper Conversion Kit

SKU: HKP-17180
Brand: USA

MR556, HK416 .300 BLK Upper Conversion Kit- 10.4"

An answer for all of those that have been wanting an HK MR556 or HK 416 offered in a 300 Blackout upper.

Each US made conversion kit includes:

  • .300 Blackout 10.4" barrel threaded .578 X 24
  • Trunion
  • Gas block
  • Barrel nut
  • A2 flash hider
  • Crush washer
  • Barrel Wrench to assist in conversion

Each conversion kit includes all the necessary parts you need. All that you need to provide is your gas piston assembly, upper & carrier group. If need be we will offer them for sale as well.

No FFL required as the upper assembly is only considered a part and not an FFL item.

Condition: New
Origin: USA
Caliber: .300 Blackout
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HK MR556, HK 416 10.4" 300 BLK Upper Conversion Kit
HK MR556, HK 416 10.4" 300 BLK Upper Conversion Kit
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