Arcturus LWT MK-I CQB 10" AEG Sport Series ARC SE

Next-Gen Programmable ETU: The ARC SE® Enhanced Optical ETU offers advanced electronic performance with easy trigger-based programming—no external tools required. Select from multiple fire modes including binary trigger, burst fire, and auto ramping, all with adjustable pre-cocking, active braking, and low battery protection.

Durable Lightweight Construction: The high-strength polymer receiver with molded metal inserts offers an ideal balance of weight reduction and structural integrity. Coupled with a nylon fiber M-LOK handguard and reinforced stock, the platform is built for maneuverability in tight CQB environments.

Quick Change Spring System: The hybrid Version 2 gearbox includes a quick-change spring guide, allowing players to easily adjust FPS for different field limits without opening the gearbox.

Reliable, Tuned Internals: Equipped with an 18:1 gear set and a torqued-up ferrite motor, the MK-I CQB delivers consistent cycling and respectable rate of fire on an 11.1V battery. The reinforced RS™ rotary hop-up unit ensures solid air seal and adjustability for accuracy across engagement distances.

Customization-Ready Platform: Standard AEG inner barrel and hop-up compatibility, a removable flash hider on a threaded barrel, and full-length M-LOK rail space make this rifle a strong base for upgrades and accessories.

Option - Field-Ready Starter Pack: This complete starter bundle option includes an 11.1V 2000mAh Li-ion battery, a B3 Pro Li-ion/Li-Po charger, and an indoor 350 FPS spring, providing everything needed to get started on the field right out of the box. Ideal for new players or anyone looking for a feature-rich, dependable rifle with no guesswork.

Features

• Programmable SE ETU with optical trigger sensor
• 5 Fire Mode Options: Semi, Burst (2/3), Binary with Ramping, Full-Auto
• Selectable Pre-Cocking, Active Braking, and Battery Protection
• Quick-change spring system (includes indoor spring)
• Lightweight polymer body with metal-reinforced components
• M-LOK compatible nylon fiber handguard
• Rear-wired with Deans connector (adapter included)
• Windowed ARCTURUS MOD1 350rd hi-cap magazine
• Backup folding sights, manual, tools, and accessories included
• Starter Package also includes 11.1V Li-ion battery and smart balance charger

Specifications

Overall Length: 28.7–31.9 in (729–811 mm)
Weight: 4.6–5 lbs (2097–2248 g)
Outer Barrel Length: 10.8 in (274 mm)
Barrel Thread: 14mm CCW
Inner Barrel Length: 280 mm
Muzzle Velocity: ~400 FPS w/ stock spring; ~350 FPS with included indoor spring (±10%)
Battery Type: 11.1V 2000mAh Li-ion Deans (with starter package)
Gearbox Type: Version 2 Hybrid w/ Optical Trigger
Motor Type: 23T Torqued-Up Ferrite Motor
Fire Modes: Safe / Semi / 2- or 3-Round Burst / Binary / Full Auto (programmable)
Color: Black, Grey, or Black-Tan
Magazine Capacity: 350rd Hi-cap MOD1 Windowed Magazine
Package Includes: Rifle, Magazine, Backup Sights, Deans Adapter, Manual, Cleaning Rod, Armor Tool, Patch, Stickers