Daniel Defense 23-088-19020-047 DDM4 300 S, URG, .300 AAC Blackout, 10.30" Barrel
Daniel Defense 23-088-19020-047 DDM4 300 S, URG, .300 AAC Blackout, 10.30' Barrel
Daniel Defense

Daniel Defense 23-088-19020-047 DDM4 300 S, URG, .300 AAC Blackout, 10.30" Barrel

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Out of Stock. 0 Available
UPC Barcode:815604015134
Part Number:23-088-19020-047
The Daniel Defense M4 300S Upper Receiver Group was designed for those demanding a high-performance, short-barrel rifle chambered in the versatile 300 Blackout cartridge. Built around a Cold Hammer Forged 10.3” Strength-to-Weight (S2W) profile barrel, the 300S URG delivers .30 caliber projectiles with greater muzzle energy than comparable 5.56mm platforms. The barrel is equipped with a DD improved Flash Suppressor to reduce flash signature, and a low-profile, pistol length gas system provides smooth, reliable cycling under harsh conditions and reduces perceived recoil. Our DDM4 Rail 9.0 shields the barrel and gas block and affords ample room for securely mounting multiple accessories. Three removable DD Rail Panels made from Santoprene, which are heat resistant to 300° F, provide a secure, comfortable grip while protecting the support hand from heat, while a Daniel Defense Vertical Grip provides superb ergonomics and control. All Daniel Defense complete upper receiver groups come standard with a bolt carrier group and charging handle.

Material and Construction:

- Upper Receiver: Mil-Spec with Indexing Marks and M4 Feed Ramps. CNC Machined of 7075-T6 Aluminum, Type III Hard Coat Anodized
- Barrel: Chrome Moly Vanadium Steel, Cold Hammer Forged, 1:8 twist, 10.3" S2W Profile, Pistol Length Gas System, Chrome Lined, MP tested, and Mil-Spec Heavy Phosphate Coated
- Gas System: Pinned Low Profile Gas Block CNC Machined of 4140 hardened steel and Mil-Spec Heavy Phosphate Coating, Pistol 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 9.0, CNC Machined from 6061-T6 Aluminum, Type III Hard-Coat Anodized
- Grip: Daniel Defense Vertical Grip, Glass-Filled Polymer with Soft-Touch Overmolding


- Caliber: .300 Blackout
- Barrel Length: 10.30"
- Gas System: Pistol Length
- Profile: S2W [Strength-to-Weight]
- Weight: 3.65 lbs

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