M4 Sentry is a M4A1 based Assault rifle in CQB size. Its size is shorter than a Standard M4 CQBR and comes with Vltor style accessories like the flip front sight, MUR frame and the Mod rear stock. Also, the DD style rail system which equipped on M4 Sentry is more solid when compare with the RIS / RAS hand guard, hence makes the M4 Sentry rifle is a solid and stable AEG in ourdoor field or during CQB battle.

Features:
14mm CCW Metal KAC type Flash Hider.
Full Metal Sentry Front set include a 7 inch DD type rail system, Vltor type flip-up front sight with rail and 9 inch one-piece outer barrel.
Comes with Full metal MUR Upper Frame and lower frame with laser marking.
Standard 20mm rail on the upper frame for rail attachments.
Adjustable Hop up System.
Bolt catch function available for easy Hopup adjustment.
Constructed of E&C Ver 2 Metal Gear Box.
Comes with full metal 600m Folding rear sight.
Comes with TD style motor grip.
Comes with a rear sling mount
Comes with Vltor style MOD type buttstock and rubber buttpad.
Store up to 7.4V Lipo battery or 9.6V twin-stick type battery (small plug) inside the rear stock tube.
Ready to go for 390 – 410 FPS (0.2g BB) without modification.
Included 300 rounds M4 type Hi-cap Magazine.

** Please note that Battery and Charger are not included. **

Specifications:
Length: 675mm, 755mm (Stock extended)
Barrel Length: 285mm
Shooting Mode: Safety, Semi-Auto & Full-Auto
Weight (g):  2660 (gun with magazine),  3310 (with box)
Gear Box:  E&C Ver 2 Metal Gear Box
Color: Black
Battery: 7.4V Lipo Battery or 9.6V twin-stick type battery (small plug)
Magazine Capacity: 300 rounds
Material: Metal & Plastic
Bullet type: 6mm BB
Power (Muzzle Velocity): 390 – 410 FPS (0.2g BB)
Manufacturer: E&C