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25-081-00029 Daniel Defense MK 12 .750 Gas Block

Manufacturer: Daniel Defense
SKU: DD-25-081-00029
Manufacturer part number: 25-081-00029
UPC: 815604011761
Out of stock - Currently No Backorders
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Daniel Defense was awarded the Naval Surface Warfare Center - Crane Division contract for the MK12 low profile gas block. As a result we are able to offer this gas block commercially. This gas block is built to Crane specification for USSOCOM.

  • Hardened 416 Stainless Steel
  • Black Oxide Coated
  • Precision CNC Machined
  • Weights 1.9 oz
  • Made in USA


  • Low profile gas block
  • 2 set screws
  • Gas tube roll pin
  • 0.5 ml. LOCTITE 262 Threadlocker

Note The MK12 Gas Block is only compatible with the RIS II M4A1 & MK18 family of rail systems manufactured by Daniel Defense. It is not compatible with any other Daniel Defense rail system. This is due to various clearance issues. This only applies to rail system lengths that would completely shroud the gas block. If you are mounting the gas block to the barrel without being shrouded by the rail system, then this does not apply. In that case, it will fit as long as barrel diameter is .750.

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