Daniel Defense DDM4 PDW .300 Blackout AR Pistol, 7 in CHF S2W Barrel, 5/8x24 Threaded, M-LOK Handguard, PDW Brace
The Daniel Defense DDM4 PDW is a compact .300 AAC Blackout AR-15–pattern pistol built around a 7.0 in cold hammer forged, chrome-lined S2W barrel and a free-float MFR XL 6.0 M-LOK handguard. It features an ambidextrous safety, GRIP-N-RIP ambidextrous charging handle with anti-gas design, a Maxim Defense CQB PDW brace with enhanced buffer system, and a Daniel Defense Linear Compensator. This example is in excellent condition and combines quality materials with a purpose-built PDW layout and proven components.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Light handling marks are present on exterior surfaces. The bore presents a clear, reflective appearance on inspection.
What’s Included
- Owner's manual
- Extra recoil spring
- Hard plastic rifle case
- Low-profile M-LOK hand stop (installed)
- 1x 30-round Magpul PMAG AR 300 B GEN M3 (polymer)
The 7.0 in barrel is cold hammer forged from chrome-moly-vanadium steel, chrome lined, and cut in the S2W heavy profile for durability. It uses a pistol-length gas system and a 1:7 twist to stabilize a wide range of .300 BLK loads. Muzzle threads are 5/8x24 and fitted with the Daniel Defense Linear Compensator made from 17-4 PH stainless and finished in salt-bath nitride.
Receivers are 7075-T6 aluminum with a hard-coat anodized black finish. They incorporate M4 feed ramps, a flared magwell, and a rear QD point. Up top is a continuous T-marked Picatinny rail, while the free-float Daniel Defense MFR XL 6.0 M-LOK handguard (6061-T6 aluminum) provides versatile accessory mounting.
The direct impingement system is supported by an M16-profile bolt carrier group that is chrome lined, magnetic particle tested, and properly staked. Controls include an ambidextrous safety selector and the ambidextrous GRIP-N-RIP charging handle with an anti-gas feature.
The PDW configuration centers on a Maxim Defense CQB brace with an enhanced buffer system, 7075 aluminum housing, and stainless steel guide rods. The collapsing, multi-position design with a rear QD sling socket keeps overall length between 20.75 and 24.75 in while maintaining control and balance. Weight is 5.7 lb and capacity is 30+1. Made in the United States and introduced at SHOT Show 2020.