Delta Armory M4 RIS ALPHA ETU Upgrade - Black

Delta Armory ALPHA ETU Series (Fully Upgraded)

Delta Armory is a manufacturer of high-quality airsoft AEG AR15 (M4/16) replicas, offering them in various configurations based on body material and internal parts.
This replica belongs to the ALPHA ETU series, boasting a very high-quality metal body that is perfectly aligned, making it one of the highest quality bodies on the market in this price range.
CRANE stock by Delta Armory was designed with modern ergonomics in mind, featuring ample space for up to 3-piece Crane-type batteries (you can also use Stick Buffer and Nunchuk type batteries). Battery access is through the stock's buttplate.
QD grip V2 offers a comfortable and secure grip, a stable motor pressure adjustment system, and quick motor access.
The entire weapon boasts a full metal construction, including the gun body, CNC handguard, barrel with an external 14-mm thread (CCW), buffer tube, and other external components (excluding the stock and grip). Also included is a CNC trigger - Type A, part of the ALPHA and BRAVO series, typically seen only on upgraded or premium guns.

The M4 RIS ALPHA ETU model features a CNC metal RIS handguard that allows for attaching various accessories such as grip, AN/PEQ box, flashlight, etc.
The brain and heart of the ALPHA ETU series replicas is the ETU processor unit from Delta Armory.

ETU Processor Unit

This unit not only ensures instant trigger response but also allows for the full utilization of the performance of an 11.1 Li-Pol battery, which is placed in the buffer tube.
The ETU unit offers mode settings such as 3-round burst, auto, binary mode (double shot), and pre-cocking.

Firing mode programming options:

• Single / 3-round burst / auto
• Binary trigger
• Pre-cocking mode

Tuned Internal Parts

The weapon's internal parts are equipped with premium upgrade components from the Delta Armory Alpha ETU Fully Upgraded series, including SHS piston, rotary hop-up chamber, and precise 6.03 mm inner barrel. QSC Gen2 Quick Spring Change allows for easy weapon power adjustment. The manufacturer claims gearbox durability up to M120 springs.

List of internal weapon parts:

• DA CNC gears 16:1
• DA CNC piston head
• DA CNC nozzle
• DA CNC stainless steel cylinder
• DA CNC stainless steel spring guide
• DA high-torque motor with strong neodymium magnets
• SHS piston with full metal teeth
• DA precise 6.03 mm barrel
• ETU unit with T-DEAN connector in the stock

Package Contents

• M4 RIS ALPHA ETU weapon
• DMAG mid-cap magazine for 120 BBs (manufacturer recommends not filling to full capacity but to about 100 BBs for longer spring life)
• Tactical grip

Warning

Batteries and charger are not included.

History of the M4 (AR15) Assault Rifle

The M4 is a compact automatic rifle of the AR15 platform developed in the United States based on the popular M16 assault rifle. It was designed to meet the need for a lighter and shorter version of the M16, suitable for use in confined spaces and urban combat.
In the 1960s, the M16, developed by Armalite, was adopted by the U.S. Army. The M16 later became the basic design for the M4. In the 1980s, the first M4 prototypes appeared, featuring a shorter barrel and a telescoping stock, improving maneuverability in confined spaces.
In the 1990s, the M4 was officially adopted by the U.S. armed forces as the standard carbine, replacing older models such as the M3 and M9.
The M4 is characterized by its capability to fire both single shots and bursts, making it a versatile weapon.
The M4 quickly became popular among soldiers due to its low weight, compactness, and reliability. It was widely used in conflicts like the Iraq and Afghanistan wars and became an iconic weapon of modern U.S. armed forces.
Besides the standard model, there are many M4 variants equipped with various accessories and upgrades to meet the specific needs of military units.