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WE Open Bolt Full Metal M4 Airsoft Gas Blowback GBB Rifle (Color: Black)

ID: 37271 (GR-WE-M4OB-B)
4.6 stars, based on 19 reviews
WE Open Bolt Full Metal M4 Airsoft Gas Blowback GBB Rifle (Color: Black)
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Item may come with WE USA Semper Fi laser engraving logo
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Canada Export CompliantCanadaExport Compliant
This gun has a muzzle velocity rating (FPS) between 366 and 500, and is compliant for export to Canada.
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Free shipping within lower 48 US states, no coupon code needed!
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  • Latest generation of WE Gas Blowback Technology featuring an "Open Bolt" design
  • Gas efficient with high velocity, accuracy and range
  • New GBB system with higher tolerance for cold magazines and weather
  • Realistic hard kick recoil blowback
  • Railed Upper Receiver w/ Detachable Carry Handle
  • Adjustable Front and Rear Sights
  • Nylon Handguard, Stock, and Serrated AR Type Pistol Grip and Retractable LE Telescopic Stock
  • Full Metal Receiver with Working Bolt-catch, Barrel Assembly, and Stock Tube

FPS Range: 410-460

Length: 768mm-850mm, Adjustable
Weight: 3100g
Inner Barrel: 363mm
Magazine Capacity: 32rd Open Bolt WE GBB Magazine
Muzzle Velocity: 410~460 FPS (Measured with 0.20g BBs and Green Gas)
Thread Direction: 14mm Negative
Gas Type: Green Gas, Red Gas, Propane Adapter
Fire Modes: Semi / Full-Auto, Safety
Hopup: Yes, Adjustable
Package Includes: Gun, Magazine, Manual

Manufacturer: WE-Tech


WE is one of the world's premiere Airsoft manufacturers, designing and creating some of the best Airsoft products in the world. Exclusively distributed by in the USA, we offer unmatched after-sales support, full parts support, and gun servicing.

19 Customer Reviews

(Write a review)

by Aries G. on 11/03/2021
"Very solid. Good trigger response. If you’re going to use aftermarket BCG like ratech steel BCG, the bolt catch might need some sanding to cycle properly. All in all it’s a very good airsoft rifle. Also EMG licensed Daniel Defense rail is compatible if you ever wanted to change the handguard. This is my second purchase for cqb mods.
by Adam M. on 11/04/2017
"I have had this rifle for 3 years. Yes I've replaced parts, but such is the life of an air softer.

I HIGHLY recommend the Co2 mags. I use them and this rifle is still serving me well. I've replaced the hop up rubber, inner barrel and some furniture. This rifle is absolutely amazing, and makes one heck of a gnarly sound when it shoots. During the local fields days of indoor, this rifle was the bane and fear of everyone's existence.

Unfortunately the bolt carrier eventually wears out, and will need replaced. But it's been 3 years and I still haven't replaced it. The bolt on mine no longer stays open on the last round.

Pros: Good weight
Solid construction
Awesome sound
Reliable with Co2 mags

Cons: Parts wear out the more you use it
Parts are weird, so you have to substitute or special order sometimes(Evike now carries all parts for this replica).
by mark s. on 06/08/2016
"this weapon system stock shoots about twice as far as my double eagle UMG with upgraded barrel and hop-up but is less accurate because I'm shooting at 150 to 200 feet.
i use .3 gram BB's because i live and play in windy areas with tons of brush.
evike has the LOWEST prices on the market

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