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    • HM Monobloc Barrel
    • HMB Bolt
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    • HM50B2 Gen2 50 BMG
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    • Defender M556L
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    • Raider MC556 SBR
  • Real World Application
    • Battle Tested
  • More
    • Home
    • Technology
      • HM Monobloc Barrel
      • HMB Bolt
    • Products
      • HM50B2 Gen2 50 BMG
      • Defender M556
      • Defender M556L
      • Raider M556 SBR
      • Raider MC556 SBR
    • Real World Application
      • Battle Tested
  • Home
  • Technology
    • HM Monobloc Barrel
    • HMB Bolt
  • Products
    • HM50B2 Gen2 50 BMG
    • Defender M556
    • Defender M556L
    • Raider M556 SBR
    • Raider MC556 SBR
  • Real World Application
    • Battle Tested
proudly made in the USA, with an integrally machined gas block for improved accuracy.

 HM Defense’s Monobloc Technology redefines the standard AR barrel by integrating the gas block directly into the barrel itself—an innovation protected under a U.S. patent. This patented design eliminates the need for traditional pinned or set-screw gas blocks, reducing weight, removing alignment issues, and enhancing overall reliability. By streamlining the gas system, HM Defense delivers superior accuracy and consistent cycling under even the most demanding conditions. Engineered for durability and performance, Monobloc Technology stands as a breakthrough in barrel design—offering a simpler, more robust solution for serious shooters and professionals alike. 

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