Description
Modern Tactical Agility: ST416D Airsoft Assault Rifle Sports Line ETU [S&T]
The legendary 416 platform gets a lightweight, high-tech evolution. The ST416D Sports Line by S&T takes one of the most recognizable special forces rifle silhouettes in the world and adapts it perfectly for the modern skirmisher. By pairing a high-density, impact-resistant polymer body with an advanced Electronic Trigger Unit (ETU), S&T has created an incredibly nimble primary weapon that delivers premium, clicky trigger performance without the premium price tag or the muscle fatigue of a full-metal rig.
Key Features & Performance
- Integrated Electronic Trigger Unit (ETU): Provides a crisp, instantaneous microswitch trigger pull while offering built-in battery protection and a programmable 3-round burst mode.
- Lightweight Sports Line Construction: The fiber-reinforced polymer receiver keeps the rifle exceptionally agile and easy to handle during long, exhausting game days.
- Full-Length Picatinny Quad Rail: A rock-solid four-sided 20mm handguard provides extensive room for mounting weapon torches, red dot sights, lasers, and PEQ boxes.
- Metal Version 2 Gearbox: Packed with steel gears, 8mm bearings, and a quick-change spring system that allows for easy velocity adjustments.
- Ergonomic 416-Style Pistol Grip: Features a more vertical grip angle and textured surface for enhanced comfort and control when weapon transitions are fast and frequent.
- 6-Position Adjustable Crane Stock: Offers a customizable length of pull alongside generous battery storage compartments with easy rear access.
The “Pro” Take
If you love the iconic look of elite tier-1 operator kits but want a rifle that won’t break your bank or your back, the ST416D Sports Line is a phenomenal choice. The absolute standout feature here is the pre-installed ETU. It completely transforms the feel of the rifle, eliminating the mushy trigger pull found on standard budget AEGs and replacing it with a snappy, highly responsive cycle that lets you dominate semi-auto snapshots. Its lightweight polymer build makes it an ideal choice for newer players, a bulletproof backup weapon, or an aggressive primary for high-speed runners.
UK Spec & Site Performance
The ST416D is fine-tuned to comply perfectly with British airsoft site regulations right out of the box. The gearbox is configured to shoot safely under 350 FPS on a 0.20g BB, ensuring its muzzle energy stays comfortably below the 1.1J limit on a 0.20g BB for full-auto capable RIFs. You can take this rifle straight from our store to the chronograph line at any UK venue with total peace of mind.
Its mid-length barrel and lightweight frame make it highly adaptable. In dense British woodland, it provides the range and accuracy needed to push through thick treelines, while its fast-handling characteristics allow you to transition effortlessly into tight, urban CQB rooms without getting bogged down by a heavy, cumbersome front end.
Important Note: In compliance with UK law, buyers must possess a valid defense (such as a UKARA registration) to purchase this Realistic Imitation Firearm (RIF) in its original tactical black finish. Alternatively, our in-house two-tone painting service is available at checkout.
Friendly FAQ
What battery do you recommend for this ETU system?
We highly recommend an 11.1V LiPo crane/nunchuck battery with a Mini-Tamiya plug. The integrated ETU is fully optimized to handle 11.1V batteries, giving you maximum trigger response and a snappy rate of fire.
How do I program the 3-round burst mode?
It is incredibly simple. Set the fire selector switch to semi-auto, pull and hold the trigger down for roughly 10 seconds until you hear a slight beep or signal from the gearbox. Your full-auto position is now converted to a crisp 3-round burst. Repeat the process to switch it back.
Is the magazine included a hi-cap or a mid-cap?
The ST416D comes supplied with a 300-round high-capacity steel shell magazine, giving you plenty of firepower right out of the box to keep heads down on the skirmish field.

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