Daniel Defense 10.3″ 5.56 MK18 Complete Upper – Black


  • Reliable carbine length gas system.
  • Chrome lined 41V50 chrome moly vanadium steel barrel with manganese phosphate finish.
  • M16 cut MIL-SPEC bolt carrier group with properly staked gas key and chrome lined bore.
  • 9.55″ MK18 Rail Interface System (RIS) II provides plenty of accessory space and includes 3 rail covers.
  • Effective flash suppressor helps tame flash from the short barrel.
  • Hand assembled, quality checked, and test fired before leaving the Daniel Defense facility.


Out of stock

Want to be notified when this product is back in stock?

SKU23-004-08013-006 Category

Please Note: This upper assembly has a barrel less than 16” in length. These uppers are only for use on AR-15 pistol lowers and legal Short-Barreled Rifles. Other configurations may violate Federal law.

The Daniel Defense 10.3″ MK18 Complete Upper is the perfect choice for anyone looking for the same high quality and performance of the MK18 SBR or MK18 pistol, in a convenient and easy to install package. Cold hammer forged barrels, legendary RIS II handguards, and better than MIL-SPEC M16 bolt carrier groups make this one of the best uppers on the market today. Don’t miss your chance to get your hands on this top quality product.


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.