S&T Colt M4 MK16 URG-I 11.5 G3 ETU Airsoft Rifle – Black / FDE

Colt M4 MK16 URG-I 11.5 G3 AEG Rifle

The S&T Colt M4 MK16 URG-I 11.5 is a modern M4 / AR15 platform replica that combines realistic full-metal construction with advanced electronics. The receiver, buffer tube, and outer barrel from the Full Metal Line series are made of metal and complemented by a CNC aluminium URG-I M-LOK handguard, giving the rifle excellent durability and an authentic feel. Inside, you'll find a V2 gearbox with a G3 ETU unit and MOSFET, improving trigger response, battery efficiency, and overall consistency. Thanks to the magnetic trigger sensor, the rifle reacts faster than traditional AEGs. The Quick Spring Change (QSC) system allows spring replacement without removing the gearbox from the receiver, making power adjustments easy through the buffer tube. A long inner barrel combined with an adjustable hop-up provides solid accuracy at medium range. The M-LOK handguard and upper RIS rail allow easy installation of optics, tactical weapon lights, or PEQ lasers. As an AEG, it performs reliably regardless of temperature—simply connect an 11.1V Li-Pol / Li-Ion battery and you're ready to play.

Key Features of the Colt M4 MK16 URG-I

Technical Specifications

• Type: Electric Rifle (AEG)
• Platform: M4 / AR15
• Gearbox: Reinforced V2
• Electronics: G3 ETU MOSFET
• Fire Modes: Safe / Semi / Full-Auto
• Hop-up: Adjustable
• Power: Up to 1.49 J
• Muzzle Velocity: Approx. 120 m/s (with 0.20 g BBs)
• Inner Barrel: 300 mm (6.03 mm)
• Magazine Capacity: 300 BBs (Hi-Cap)
• Length: 730–815 mm
• Weight: 2730 g
• Barrel Thread: 14 mm CCW
• Connector: T-Dean (inside buffer tube)
• Recommended Battery: 11.1 V Li-Pol / Li-Ion (Crane / Nunchuk or Buffer Stick)
• Material: Metal / CNC Aluminium / Polymer

Package Contents

• Colt M4 MK16 URG-I 11.5 Rifle
• Hi-Cap Magazine (300 BBs)
• User Manual

Warning

• When installing a spring with progressive (uneven) winding, make sure the end with tighter coils is placed on the spring guide facing out of the gearbox.
• Do not use springs stronger than M120 (beware of misleading ratings, for example an SHS M120 often performs closer to M130–M140).
• Never store the rifle with a battery connected.
• Do not use 7.4V or 8.4V batteries, as they are too weak for the G3 ETU unit.

Frequently Asked Questions (FAQ)

What battery should I use?

We recommend an 11.1 V Li-Pol or Li-Ion battery with a T-Dean connector to take full advantage of the MOSFET and fast trigger response.

How difficult is maintenance?

Simply clean the barrel regularly and monitor battery condition. Periodic gearbox servicing is recommended.

Is it compatible with standard M4 magazines?

Yes, it works with most AEG magazines designed for the M4 / AR15 platform.

Is it suitable for beginners?

Yes. Thanks to its performance and full-metal construction, it is one of the best rifles in terms of value for money.