Daniel Defense MK18 RIII
Daniel Defense · Carbine · In Production · 2024
Overview
The MK18 RIII evolves the legendary MK18 platform with a fully ambidextrous lower receiver and the new RIS III M-LOK handguard. Both left- and right-handed shooters can operate the bolt catch, safety selector, and magazine release without breaking their shooting grip. The slimmer M-LOK handguard reduces weight while maintaining the 10.3-inch barrel that defined the CQB standard.
Specifications
| Weight (empty) | 2599 g (91.7 oz) |
| Overall Length | 679 mm (26.73") |
| Barrel Length | 262 mm (10.31") |
| Action Type | Gas Operated Direct Impingement |
| Firing Mechanism | Hammer Fired |
| Trigger Type | Single Stage |
| Magazine Capacity | 30 rounds |
| Magazine Type | Detachable Box |
| Effective Range | 500 m (547 yd) |
| Maximum Range | 3600 m (3937 yd) |
| Barrel Rifling | Right Hand |
| Rifling Twist | 178 mm (7.01") |
| Number of Grooves | 6 |
| Frame Material | Aluminum |
| Barrel Material | Steel |
| Stock Material | Polymer |
| Finish | Hard Anodized |
Calibers
- 5.56x45mm NATO · primary — also known as 5.56mm NATO, .223 Remington, 5.56x45mm
Features
- Firing modes: Semi Automatic
- Feed systems: Detachable Box Magazine
- Safety mechanisms: Fully Ambidextrous Safety Selector
- Features: Cold Hammer Forged Barrel, Chrome Lined Barrel, Free Floating Handguard, Grip N Rip Charging Handle, M4 Feed Ramps, Flat Top Receiver, Picatinny Rail, Ris Iii Handguard, M Lok Attachment, Carbine Length Gas System, Adjustable Stock, Fully Ambidextrous Lower, H Buffer
Base model
Production
Production years: 2024-present
Origin
Country of origin: United States
Notes
MSRP: $2,554. NFA-regulated SBR. The RIII designation indicates the RIS III handguard system replacing the quad rail.
Background
The RIII series represents Daniel Defense's next generation, replacing the iconic quad rail with a lighter M-LOK handguard while adding fully ambidextrous controls demanded by modern military and law enforcement users.