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WE Full Metal XM177 M4 Open Bolt GBBR Gas Blowback Airsoft Rifle

SKU: GR-WE-XM177OB WE TechOut of stock

  • WE open bolt design w/ higher tolerance for cold weather
  • Hard kick recoil
  • Front sling mount
  • Full-length inner barrel for extended accuracy
  • XM177 one piece upper receiver
  • Adjustable front and rear sights
  • Interchangeable with CO2 magazines


WE Full Metal XM177 M4 Open Bolt GBBR Gas Blowback Airsoft Rifle

The WE Full Metal XM177 M4 Gas Blowback Rifle (GBBR) features the latest WE Tech open bolt design and is more resistant to cold weather than most other gas airsoft guns. Shooting 400 FPS (0.20g BBs) and featuring a full metal bolt, this M4 gives players arguably the most realistic recoil on the airsoft market. This WE M4 takes the VN-style M16 rifle and combines it with the maneuverability of a standard M4A1 to create the XM177. The authentic M4A1 handguard, VN-style LE stock, functional bolt catch, VN-style magazine, and carry handle make this a very unique GBBR. This is the perfect gas blowback M4 rifle for any player looking for high performance, realism, and uniqueness.

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.

In the Box


20rd magazine


Operation Gas Blowback
Firing Modes Semi-automatic and Full-automatic, w/ Functional Safety
Build Metal Receiver, Barrel/ Polymer Furniture
Muzzle Velocity 400-420 FPS (w/ 0.20g BBs)
Rate of Fire 13+ RPS
Magazine 30 rounds
Propellant Green Gas (Recommended)
Inner Barrel Diameter 6.03 mm
Inner Barrel Length 363mm
Hop-Up Adjustable
Weight 6.1 pounds
Overall Length 30.5"/ 33.5" in. (Retracted/ Extended)

California Proposition 65 Warning: Cancer and Reproductive Harm -

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