Daniel Defense DDM4 MK18 Pistol 5.56 NATO, 10.3 in CHF Chrome-Lined Barrel, MK18 RIS II Quad Rail, Black
This Daniel Defense DDM4 MK18 Pistol pairs a 10.3 in cold hammer forged, chrome-lined barrel with the proven MK18 RIS II free-float quad rail. Built on 7075-T6 aluminum receivers with a Type III hard-coat anodized finish, it features a carbine-length gas system, a 1:7 twist, and a factory three-prong flash hider. It comes ready with two 30-round Magpul PMAGs, rail covers, and a push-button QD sling swivel.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: This firearm is in solid functional shape. There are visible scratches and blemishes from prior handling.
What’s Included
- Original hard case
- Paperwork
- 2 Magpul PMAG 30-round polymer magazines
- Ladder-style Picatinny rail covers
- Push-button QD sling swivel (installed on handguard)
The 10.3 in barrel is chrome-moly vanadium steel that is cold hammer forged and chrome-lined with a government profile. It uses a 1:7 twist for 5.56 NATO and is threaded 1/2x28 TPI. A three-prong flash hider is installed at the factory with a crush washer. The carbine-length gas system is paired with a low-profile gas block for reliable cycling.
The Daniel Defense MK18 RIS II free-float quad rail is 9.55 in long and made from 6061-T6 aluminum with numbered slots. Ladder-style rail covers are included for a comfortable grasp, and a push-button QD sling swivel is already installed on the handguard.
The flat-top upper features an integral 1913 Picatinny rail, forward assist, shell deflector, and ejection-port cover. Receivers are 7075-T6 aluminum with a Type III hard-coat anodized black finish. Markings include an upper receiver marked "MK18," a lower marked "Daniel Defense, Black Creek, GA, U.S.A., Model DDM4, Cal. MULTI.," and "5.56" forward of the ejection port.
This AR-15 pattern pistol runs a semi-automatic, direct impingement system with a manual safety selector. It is equipped with an arm brace featuring a hook-and-loop strap on a carbine receiver extension and a textured polymer pistol grip. It accepts detachable AR-15 magazines and includes two 30-round Magpul PMAGs for a stated capacity of 30+1. Sights are not included. Made in the USA.




