MK12 Low Profile Gas Block

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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.

* Does not fit within the DDM4 Rail, SLiM Rail, MFR XS, or Omega Rail.


More Information
Product Weight1.9 oz
Inside Diameter0.750"
Attachment StyleSet Screws
ManufacturerDaniel Defense
Daniel Defense Satisfaction Guarantee
Guaranteed Satisfaction

All Daniel Defense products carry a 100% satisfaction guarantee against defects in original materials and workmanship. If your Daniel Defense product shows evidence of such defects, Daniel Defense will make every accommodation to fix, repair, or replace your product in the most expeditious manner possible. Daniel Defense does not warranty products or damage caused to our products by the correct or incorrect installation of other manufacturer's products.

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  1. As good a version of this as you can get.
    My 5 star rating is for DD's implementation of this gas block, not really the gas block itself. For the Mk12 gas block, I'd give maybe 3 stars—it gets the job done, but is unnecessarily bulky, especially the fat base, which makes it difficult to fit under rails/handguards which were not designed specifically for it (like DD's own RIS II). The Mk12 is hardly "low profile" by modern standards. That having been said, it's not DD's fault the thing is so portly; they make it per Crane spec, and make it well. If you want a Mk12 gas block for a specific clone build, for example, or in an implementation where it's extra bulk will fit (either outside the handguard, or under something like a RIS II), then the DD version should serve you well.

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