The Daniel Defense MK12 Upper Receiver Group is constructed around an 18-inch Stainless Steel barrel with a chamber created during the Cold Hammer Forging process, which ensures the most precise alignment of the chamber to the bore possible. This, along with being DLC finished, equates to unprecedented accuracy and durability. The MK12 barrel is engineered with a rifle-length direct impingement gas system and utilizes the MK12 gas block, which is built to Crane Specifications for USSOCOM. The MK12 gas block is precision CNC machined from 416 stainless steel and Black Oxide Coated. The new independently ambi GRIP-N-RIP Charging Handle accommodates left- and right-handed shooters and is engineered for suppressed fire, with anti-gas features that redirect gas flow upward and away from the face and operator. The upper receiver is equipped with a free-floating DDM4 Rail 12.0 quad rail for allowing your choice of optics and accessories and is finished off with a Daniel Defense Improved Flash Suppressor. Specifications for Daniel Defense MK12 Upper Receiver Group 18in: Manufacturer: Daniel Defense Cartridge: 5.56x45mm NATO Barrel Length: 18 in Barrel Profile: MK12 Gas System Length: Rifle Length Finish: Nitride Color: Black Gun Model: AR-15 Gun Rail: Picatinny Weight: 5.23 lb Magazine Included: No Mount Type: Picatinny Features of: UPPER RECEIVER: Mil-Spec with Indexing Marks and M4 Feed Ramps. CNC Machined of 7075-T6 Aluminum, Type III Hard Coat Anodized BARREL: Proprietary Blend of Stainless Steel, Cold Hammer Forged, 1:7in Twist, 18in MK12 Profile, DLC Finished, and HP/MPI Tested GAS SYSTEM: MK12 Low Profile Gas Block CNC Machined of 416 hardened steel with Black Oxide Coating, Rifle Length, Direct Impingement MUZZLE DEVICE: Daniel Defense Flash Suppressor, 17-4 PH Stainless Steel, Salt Bath Nitride Finished BOLT CARRIER GROUP: M16 Profile, Mil-Spec MP Tested, Chrome Lined, Properly Staked Gas Key SIGHTS: Sold Separately HANDGUARD: Daniel Defense DDM4 Rail 12.0, CNC Machined of 6061-T6 Aluminum, Type III Hard Coat Anodized CHARGING HANDLE: GRIP-N-RIP Charging Handle, Body CNC Machined of 7075-T6 Aluminum, Handles & Latch CNC Machined of 6061-T6 Aluminum, Heavy Duty Stainless Steel Roll Pins, Type III Hard Coat Anodized RAIL PANELS: Daniel Defense Rail Panels Made from Santoprene, Heat Resistant to 300° F. Package Contents: Daniel Defense MK12 Upper Receiver Group 18in Daniel Defense Warranty: 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. Warranty information and warranties are supplied solely by the manufacturer, and not this retailer. This retailer publishes information from the manufacturer for information purposes only, and the manufacturer is solely responsible and liable for any warranty information and warranties published by this retailer. Please reference the appropriate manufacturer documents or reach out to the manufacturer directly for full warranty terms and effective dates. @media screen and (max-width: 400px) { #w-block-one { display:table-row !important; } }
4 reviews for Daniel Defense MK12 Upper Receiver Group 18in
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Kyle Berger –
Top notch! From the product received to the customer service. From their supplier to my front door the estimate time was exactly in the window I received my product. I received a couple emails just keeping me updated on my order. Shipped on Monday and I received it on Wednesday. As the terminator said, "I'll be back!"
Harrison –
Daniel defense makes an amazing product. Would highly recommend
Bri –
One of the beat rifles I own and to me this is the real MK12. I love PRI also and have both. They are on par with each other all the way. Plus this ones chromed. I like the rail a lot more than others as it's slimmer. I'm happy they still produce this variant. Mine came packaged well.
J. Callaway –
I wanted to build my take on a MK12 and after some research I selected the DD MK12 Upper receiver. It arrived in perfect condition and is very accurate. The first trip to the range was during a crazy driving rain storm. The remnants of hurricane Helene here in Indiana. I quickly sighted it in and was shooting sub MOA in terrible conditions. I highly recommend it.