Bolt Group – UMP .45


HK UMP .45 Tungsten Filled Semi Auto Bolt Group Complete.

The semi auto bolt group is required for HK USC to HK UMP caliber conversions. Comes complete less the recoil assembly.

  • Tungsten Filled
  • Heat Treated
  • Parkerized
  • Brand: USA

In stock

SKU: HKP-18751

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