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Matrix x Double Eagle UTR45 Airsoft AEG SMG w/ M-LOK Handguard and Falcon Gearbox (Model: 400 FPS / Black)

ID: 95991 (AEG-MTX-M917B-BK-400)
M917B BK-400
Matrix859188959910M917B BK-40095991
4.9 stars, based on 9 reviews
Matrix x Double Eagle UTR45 Airsoft AEG SMG w/ M-LOK Handguard and Falcon Gearbox (Model: 400 FPS / Black)
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Red Dot sight not included
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MatrixDouble Eagle


Temporary No-ExportTemporarily avilable in US only
This item is temporarily only available for shipping within the United States. International delivery will be available this item soon.
Canada Export CompliantCanadaExport Compliant
This gun has a muzzle velocity rating (FPS) between 366 and 500, and is compliant for export to Canada.
Free ShippingNo Coupon Required
Free shipping within lower 48 US states, no coupon code needed!


  • Lightweight & durable nylon polymer receiver construction
  • Falcon Electronic Control System can control fire mode and trigger sensitivity as well as provide battery and motor protection
  • Features the new "Falcon" version 2 gearbox w/ quick change spring, 8mm steel bearings, and rotary hop-up unit
  • Flat top picatinny rail for optics
  • M-LOK compatible slots on the 3, 6 and 9 o'clock positions for any accessories
  • Ambidextrous fire selector, bolt release, and folding charging handle
  • Foldable 6 position retractable stock w/ 4 position adjustable cheek rest
  • Textured ergonomic pistol grip
  • Flip up front & rear sights

Manufacturer: Matrix / Double Eagle

FPS Range: 370-400

Color: Black

Model (Type): 400 FPS


Length: Approx. 470mm - 641mm, Adjustable
Weight: 2380g
Inner Barrel: Approx. 240mm
Magazine Capacity: 120rd Mid-Capacity. Works with Matrix, Tokyo Marui and other compatible UMP Series Airsoft AEG Magazines
Gearbox: Ver 2 Full Metal, Fully Upgradeable
Thread Direction: 14mm Negative (CCW)
Motor: Long Type
Fire Modes: Semi/Full-Auto, Safety
Battery: 7.4v Small Stick Type LiPo recommended (Battery not included. Wired to stock with a Standard Deans style connector)
Hopup: Yes, Adjustable
Package Includes: 1x Gun, 1x magazine, 2x flip sights, 1x Standard Deans to small Tamiya adapter

About Matrix

Established in 2001 for Airsofters by Airsofters. Team Matrix thrive on the vision to better the sport of Airsoft with affordable high quality Airsoft equipment. With decades of experiences as Airsoft enthusiasts ourselves, we live, sleep, and breathe Airsoft. Matrix offers a wide selection of skirmish grade replicas from rifles to pistols, a wide variety of accessories, and tactical equipment from helmets to boots. It is the Matrix mission to prepare every Airsoft shooter the perfect experience!

9 Customer Reviews

(Write a review)

by Dylan M. on 12/04/2022
"I love this gun. Compared to my Elite Force Competition Kit MP5, this gun is cheaper, has better build quality, and feels way more sturdy. The stock has lots of battery space and is easily accessible without me feeling like I'm going to accidentally open it all the time. It also comes with a Mosfet with an electronic trigger and battery low protection, so I run an 11.1v Lipo in it. I wish my Krytac came with an electronic trigger and battery low protection... It's also great that it comes with a Mid Cap magazine, instead of a Hi Cap magazine that I will never use. If you're considering buying this gun, get it, you won't be disappointed.

On a side note, I think I misplaced the included alternative mag release, or maybe it wasn't included for me. Is there anywhere I can get another one?
by Huong N. on 10/13/2022
"First Impression:
The gun comes in a very nice package, it includes, one magazine and a tplug to Tamiya adaptor. Unlike the Taiwan gun version, it does not come with mounts for the gun, but works with more rails as it has the widely used mlok rather than lwrci. Another plus is mosfett making the gun a really good price for what it gives you. Good weight about 5 pounds.

The gun fires accurately in semi and auto, about 6inches in the vertical spread at 100 ft.
The gun's small size does allow me to transport the gun very easily and run. But the magazine makes it very hard to reload and go prone.

Other Notes:
If you buy this make sure you buy enough magazines as these are proprietary and are very hard to buy without paying for shipping.
Does come with sling mounts.
This gun will not accept nunchuck nimh batterys unless you jam them in, you will need stick lipos.
by Alton E. on 10/11/2022
"Amazing gun! The gun build is super solid and it feels amazing when your holding it. It definitely is a powerful gun because when I shot it my glass window it managed to shatter it…. Great gun, I would recommend!

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