Rossi M4 Sentinel 5,5" TAU (Tan)

Construction & Aesthetics

• Build: Reinforced polymer receiver paired with a 5.5″ CNC-machined metal handguard featuring M-LOK slots - a perfect mix of durability and lightweight handling.

• Finish: Two-tone malleable in tan and black, displaying a tactical, stealthy look ideal for CQB environments.

Internals & Performance

• Gearbox: Version 2 gearbox equipped with robust 18:1 steel gears, steel-tooth piston (approx. 14.5 teeth), 8 mm metal bushings, quick-detach spring guide, and a programmable ETU with active brake - ensuring crisp response and segmenting fast shooting capabilities

• Barrel & Hop-up: Precision 6.02 mm inner barrel (≈229 mm length) inside a sturdy outer barrel - enhances accuracy. Adjustable hop-up lets you fine-tune for different ranges

• Velocity & FPS: Shoots between 300-330 fps using 0.20 g BBs - well-suited for UK indoor/outdoor field limits

Ergonomics & Adaptability

• Length & Weight: Compact CQB-ready size - approximately 700-780 mm overall, weighing ~2.07 kg (without battery)

• Stock & Sights: Equipped with an adjustable (crane-style) buttstock and flip-up polymer iron sights - quickly deployable and zero-able

• Battery/Cabling: MOSFET-equipped wiring allows use with 7.4 V LiPo (7.4 or higher recommended), though battery and charger are not included

Mags & Extras

• Magazine: Supplied with a tan 300-round hi-cap magazine - ample ammo capacity for rapid engagements

• QD Spring Guide: Enables fast spring swaps to keep FPS within field or regulatory limits.

Spec Summary

• Feature
  Specification
• Body
  Reinforced polymer + 5.5″ CNC M-LOK metal rail
• Gearbox
  18:1 steel gears, steel piston, 8 mm bushes, ETU
• Barrel
  6.02 mm precision inner, ~229 mm length
• Hop-Up
  Adjustable
• FPS (0.20 g)
  300-330 fps
• Fire Modes
  Safe / Semi / Full auto
• Stock
  Adjustable crane-style
• Sights
  Flip-up polymer irons
• Weight
  ~2.07 kg
• Length
  ~700-780 mm
• Magazine
  300-round tan hi-cap
• Battery
  Not included (LiPo 7.4 V recommended)