Daniel Defense DD4 RIIIS, Complete Upper Receiver, 556NATO, 11.5 in Barrel, 1:7 Twist, Daniel Defense RIS III 10.5 in Handguard, M16 Profile Bolt Carrier Group, Anodized Finish, Black/Flat Dark Earth 23-191-02397-011

The DD4 RIIIS AR15 style Upper Receiver Group is built around a 11.5 inch Cold Hammer Forged Government Profile barrel with a Daniel Defense Flash Suppressor" a GRIP-N-RIP Charging Handle" and their carbine length gas system. It features a 10.5 inch lightweight RIS III rail—modeled after the revolutionary RIS II two-piece handguard developed for SOCOM— which features M-LOK attachment for lighter weight. All Daniel Defense complete upper receiver groups come standard with an M16 profile bolt carrier group.

UPPER RECEIVER: Mil-Spec with Indexing Marks and M4 Feed Ramps. CNC Machined of 7075-T6 Aluminum

BARREL: Chrome Moly Vanadium Steel,1:7 Twist, 11.5" Government Profile, Chrome Lined, Mil-Spec Phosphate Coated

GAS SYSTEM: Pinned Low Profile Gas Block CNC Machined of 4140 hardened steel with Mil-Spec Phosphate Coating, Carbine Length

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

Type of Barrel:	1:7
Barrel Length:	11.5"
Finish:	Anodized
Caliber:	556NATO
Manufacturer:	Daniel Defense
Manufacturer part #:	23-191-02397-011
Model:	DD4 RIIIS
Type:	Upper
Sub Category:	Complete Upper Receivers
Color:	Black, Flat Dark Earth