Adding to their extremely successful line of stripped MK18 Daniel Defense uppers, Daniel Defense now has the stripped MK18 upper with their RIII rail! The MK18 RIII AR15 style Upper Receiver Group is unmatched in size, weight, and performance, and is built around a 10.3 inch Cold Hammer Forged M4 Profile barrel and a carbine length gas system. It features a 9.5 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.
- 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, 1:7 Twist, 10.3″ Government Profile, Chrome Lined, Mil-Spec Heavy Phosphate Coated, and HP/MPI Tested
- Gas System: Pinned Low Profile Gas Block CNC Machined of 4140 hardened steel with Mil-Spec Heavy Phosphate Coating, Carbine Length, Direct Impingement
- Handguard: Daniel Defense RIS III 9.5, Patented, 6-Bolt Bolt-Up System, CNC Machined of 6061-T6 Aluminum
Technical Specifications:
- Barrel Contour: M4
- Finish: Anodized
- Barrel Length: 10.3
- Length: 17.5 inches
- Width: 2.25 inches
- Height: 2.25 inches
- Weight: 5.0 lbs
- Caliber: 5.56×45 NATO
- Color: DDC
- Material: Aluminum
- Gas System Length: Carbine
- Gas System Type: Direct Impingement
- Twist: 1-7
- Make Model Fit: AR-15.Universal
- Muzzle Threads: 1/2×28
- Receiver Style: Stripped
DOES NOT INCLUDE: Bolt Carrier Group, Charging Handle and Muzzle Device. See Aegis Cerakote’s products in the links.
Once this part is assembled into a complete firearm, it becomes a regulated item by the National Firearms Act (NFA). Please check with your local and state municipalities for any further regulatory requirements. It is the buyer’s responsibility to make sure they comply with all NFA rules and applicable laws.
Made in the USA
Note on Colored Anodizing:
Colored anodizing is an electro-chemical process and natural variations should be expected. Due to differences in alloy, forging, and dye uptake, slight shade mismatches between the upper, lower, and handguard—as well as visible blending, tonal variation, or minor surface marks—are inherent to the process and not considered defects. Color may also appear different under various lighting conditions.
Check out the Aegis Cerakote & Gunworks patent pending AR-15 to M16/M4 Class 2 Full Auto Drilling Fixture and Jig. This full auto drilling fixture eliminates all human error associated with every other jig currently on the market.
