Daniel Defense DDM4 MK18 RIII 12.5 Lightning Series gas-powered replica - Black [EMG]

The Daniel Defense DD MK18 RIII 12.5 replica from the CYMA CGS Lightning Series sets a new standard among GBB gas replicas. Designed for realistic feel, dynamic action and top-quality workmanship, it combines a solid aluminum construction, a precision gas system and a full Daniel Defense license. Thanks to the Gas Blow Back (GBB) system, the replica delivers realistic recoil and bolt action, offering an experience close to handling a real firearm. It's an ideal choice for milsim enthusiasts and tactical training.

Realistic replica under official Daniel Defense license

The DD MK18 RIII 12.5 model is a licensed replica produced in collaboration with EMG and Daniel Defense. The receiver features original, deeply engraved Daniel Defense markings, giving the replica an authentic character.

The modern M-LOK handguard allows mounting a wide range of accessories — such as lights, lasers, grips or red dot sights — providing maximum customization for style and function.

The replica also features a licensed pistol grip with aggressive texture and an adjustable Daniel Defense stock, ensuring a secure hold, comfort and stability in any shooting position.

Premium-class construction - lightweight, durable, precise

The construction is based on a combination of critical steel parts (trigger group, hammer, trigger sear, bolt release, pins) and aluminum components (trigger housing, bolt housing, stock guide, outer barrel).
This combination provides excellent durability and lightness while maintaining full operational precision.

The Lightning Series stands out with a lighter aluminum bolt and an optimized buffer, which improve responsiveness, cycling and rate of fire (RPS up to 18). The replica features an ambidextrous charging handle and a quick hop-up chamber removal system, making maintenance and adjustment easier during play.

CYMA CGS Gas System - a new definition of realism

At the heart of the replica is the innovative CYMA CGS (CYMA Gas System), developed in collaboration with T8 (SP System) and inspired by the renowned MWS M4/AR-15 platform.
This system provides stable feeding, a precise bolt cycle and strong recoil, which translates into maximum realism during use.

With the adjustable trigger, the user can tailor the operating characteristics to their preferences, and compatibility with AR-15 accessories opens broad personalization possibilities.

A brand you can trust

CYMA is one of the most recognized manufacturers in the airsoft world. The CGS LS (Lightning Series) represents the culmination of the brand's many years of experience — combining modern technologies, high reliability and exceptional durability.

CYMA products are valued for their excellent quality-to-price ratio, wide availability of parts and expandability, making them the number one choice for both beginners and professional airsoft users.

Looking for spare parts? Check out our list of replacement and service parts.

Package includes:

• CYMA CGS GBB DD MK18 RIII replica
• Magazine
• Folding iron sights

Recommended products:

• Green Gas AR15 magazine for CGS, MWS GBBr - Black [CGS]
• Green Gas LANCER L5 5.56 AWN magazine for CGS, MWS GBBr - Black [EMG]
• 30rd Lancer L5AWM 5.56 Style Train-Safe GBBR Magazine - Blue [EMG]
Each replica undergoes a zeroing check. It is tested and measured on an XCORTECH X3200 chronograph.