Delta Armory MK18 Alpha Eagle Airsoft AEG — Black

The Delta Armory MK18 Alpha Eagle is an M4-format airsoft AEG with a 265 mm barrel, an adjustable overall length between 700 mm and 790 mm, and a weight of 2560 g. The receiver and barrel assembly are metal, while the stock, pistol grip, and sights are polymer. It is aimed at players looking for a high-performance V2 platform with a programmable electronic control unit already fitted.

The heart of the airsoft gun is the ETU control unit paired with a V2 QSC gearbox, a 14-tooth piston, 7 mm metal bearings, and a 6.03 mm inner barrel. Muzzle velocity is 115 m/s with 0.25–0.28 g BBs. The ETU enables multiple fire modes — semi-auto, 3- or 5-round burst, binary, full-auto, pre-cocking, AUG mode, and Sniper delay — but requires calibration before first use: the full manual is accessible via the QR code printed next to the battery connector. The connector is T-Dean type and is housed in the buffer tube, compatible with 11.1 V Li-ion or LiPo stick batteries, which are not included.

One key consideration concerns pre-cocking: this mode speeds up trigger response by keeping the piston under tension, but the airsoft gun should never be stored with pre-cocking active — the piston must be released before storage to avoid fatiguing the spring. Similarly, the Active Brake function is not compatible with aftermarket brushless motors: disable it before any motor upgrade. The included DMAG mid-cap magazine holds 120 BBs, but the manufacturer recommends loading it to around 100 to protect the internal spring. The 9.6 V battery and charger included in the box are a promotional bonus and are not covered by the warranty: for regular use, a quality battery with a dedicated balance charger is recommended.

Key features

• Programmable fire modes via ETU — semi, 3/5-round burst, binary, full-auto, pre-cocking, AUG mode, Sniper delay — adjustable to field rules without mechanical intervention.
• V2 QSC gearbox with 7 mm metal bearings: reduces wear during rapid-fire cycles compared to plastic bearings.
• Adjustable hop-up and 6.03 mm inner barrel: paired with 0.25–0.28 g BBs, they promote stable and consistent trajectories at medium range.
• RIS/Picatinny rail on the receiver: allows optics, torches, and side accessories to be mounted without adaptors.
• Adjustable length between 700 mm and 790 mm via the retractable stock: balances the rifle to suit the kit being worn.
• Software-managed pre-cocking: increases trigger responsiveness but requires the piston to be released before storing the airsoft gun.

In the box

• MK18 Alpha Eagle airsoft gun
• DMAG mid-cap magazine, 120 BBs
• Flip-up sights
• 9.6 V battery and charger (promotional bonus, not covered by warranty)