Delta Armory ETU Series M4 Airsoft AEG Rifle (Model: RIS Carbine / Black)

Features

• High quality aluminum alloy billet-style receiver with deep stamped roll marks and laser etching
• Drop-in quad 1913 Picatinny / 20mm RIS allows for mounting lights, lasers, optics and other accessories
• Functional bolt stop hold open for easy hopup access
• Front and Rear folding iron sights
• Comes pre-installed with an Eagle Optical Unit programmable MOSFET system
• Adjustable length of pull rubberized stock with QD sling attachment points
• Metal end plate with ambidextrous sling attachment points

The ALPHA series features full-metal construction. It uses a CNC Type A trigger for faster response and each unit has a unique serial number. The stock offers superior ergonomics compared with other brands in the same price range, and battery insertion is more convenient. The weapon includes 22mm RIS rails for mounting accessories, a fixed front sight and an adjustable rear sight mounted on the RIS, and two RIS covers to improve grip comfort. The barrel is finished with a 14 mm left-hand thread, and the gun is fitted with a metal CNC quad-rail handguard.

The Eagle ETU unit provides not only trigger sensitivity adjustment via the processor unit but also trigger travel length via an adjustable screw located directly in the trigger guard. The ETU monitors the health of the battery in the event of an undercharge or overcharge it can shut down to protect the battery, this is indicated by an audible alert. At the same time, the processor also has an Active Brake feature.

The internal parts of the gun are standard as the classic DA series - SHS piston with full metal gearing, SHS piston wheel handle, rotary hop-up chamber and 6.03mm precision barrel. The advantage of this gun is the quick change QRS Gen. 2 spring - change the spring without disassembling the gun and quickly change the QRS motor. Of course the internal parts are - metallic plain 7mm bearings, durable metal wheels and SHS feeder lever.

Upgrade parts:

CNC 16:1 Gears

CNC Piston Head

CNC Cylinder Head

CNC Nozzle

CNC Stainless Steel Cylinder

CNC Stainless Steel Spring Guide

High Torque motor

Piston with Full-Metal Rack

Precision 6.03mm barrel

Manufacturer: Delta Armory

FPS Range: 370-400

Specifications:

Length: 810mm - 890mm (Adjustable)
Weight: 2880g
Inner Barrel: ~380mm
Magazine Capacity: 120rd Mid-Cap Magazine (Works with Tokyo Marui, Matrix, EMG, and other similar M4 AEG magazines)
Thread Direction: 14mm- (Negative)
Gearbox: Ver 2 Metal, Upgradeable
Battery: 11.1v Stick Type LiPo recommended (Wired to buffer tube w/ Deans connector. Battery not included)
Fire Modes: Semi/Full-Auto, Safety
Hopup: Yes, Adjustable
Package Includes: Gun, Magazine, Back-Up Iron Sights

NOTE: Trigger does not come pre-calibrated. User programming is required before first time use. Instructions are provided in the box however if this is missing, programming is very easy. Just follow these steps;

1. Leave fire selector on "SAFE"
2. Plug-in the battery to the gun, you will hear a "Double beep" and one "Long beep"
3. Press the trigger and wait 5 seconds to successfully calibrate. You will hear a "Double beep", now you can put the fire selector to semi or auto to shoot.