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390 FPS DBoys M733 Metal Gearbox High Velocity Airsoft M4 AEG Rifle

SKU: BI-MX-11B DBoysOut of stock

  • Lightweight polymer construction
  • 390 FPS muzzle velocity (w/ 0.20g BBs)
  • Full metal Version 2 gearbox
  • Adjustable front and rear iron sights
  • Fully adjustable hop-up unit
  • Retractable LE stock w/ sling mount
  • Detachable carry handle
  • Flat top receiver optics rail
  • Battery and charger included
  • Compatible with Version 2 parts


390 FPS DBoys M733 Metal Gearbox High Velocity Airsoft M4 AEG Rifle

This "high-velocity" version of the DBoys M733 AEG is perfect for airsoft players looking for a little bit more power for outdoor airsoft field settings. While this airsoft M4 compact carbine features full polymer externals, its high quality, full metal gearbox makes this airsoft gun perfect for entry to mid-level airsoft players that are looking for a field ready airsoft M4. Firing over 390 FPS, this DBoys compact CQB M4 AEG is perfect for outdoor airsoft fields, falling below the normal legal limit (400 FPS) while providing enough power to hit players at range. The NEW DBoys M733 AEG is the compact, shorter barrel length, CQB variant of the M4 Rifle, featuring Version 2 compatible parts that make this the airsoft gun of choice for any player. The first thing you should know is that this AEG is built with a FULL METAL gearbox, which you can build on top of for improved performance. Another notable feature that you should be aware of is its extremely lightweight build. From the shortened barrel to the retractable LE stock, DBoys outfitted this airsoft M4 with lightweight ABS polymer that reduces its overall weight. If you’re looking for a field-ready AEG that shoots perfectly for indoor games and comes with everything you need right out of the box, including rechargeable battery and standard wall charger, you can’t go wrong with the DBoys M4 CQB AEG Rifle!

Ammo type: Seamless 0.20g or heavier (0.23g, 0.25g, 0.26g, 0.28g, etc) BBs. For maximum performance and accuracy, Airsoft Megastore recommends GoldenBall ProSlick BBs which carry perfect spherical consistency and density, available at Airsoft Megastore for the lowest price on the market, guaranteed.

Battery Charger Recommendation: Although this fully automatic airsoft rifle comes with a standard wall charger to charge the battery, Airsoft Megastore recommends the use of a smart charger to avoid overcharging the battery(overcharged batteries may cause decreased airsoft gun performance and may shorten battery life significantly). Smart chargers not only shorten charge time significantly (up to 800% faster charging), but more importantly, also automatically shut off once the battery is fully charged to avoid overcharged batteries.

In the Box


300rd hicap magazine

rechargeable 8.4V 1200 mAh mini battery

standard wall charger

cleaning rod

instruction manual


Operation Electric Automatic
Build Metal Gearbox / Polymer Upper and Lower Receiver, Outer Barrel, Buffer Tube, Handguard, Stock, Sights, Motor Grip
Firing Modes Semi-automatic, Full-automatic, w/ Functional Safety
Muzzle Velocity 390 – 400 FPS (w/ 0.20g BBs)
Gearbox Full Metal Version 2
Magazine 300rd High Capacity (gear wind-up)
Battery 8.4V Mini
Inner Barrel Length 280 mm
Hop-Up Adjustable
Weight 4 pounds
Overall Length 26.25" in. / 29" in. (Retracted / Extended)

California Proposition 65 Warning: Cancer and Reproductive Harm -

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