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A&K M4 GR-300 Carbine NS15 Full Metal Airsoft AEG (Model: SBR)

ID: 30624 (AEG-AK-G300-S)
4.6 stars, based on 45 reviews
A&K M4 GR-300 Carbine NS15 Full Metal Airsoft AEG (Model: SBR)
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$289.00 $236.98Epic Deal

MAP ProtectedExempt From Coupons
The manufacturer of this product enforces a strict minimum advertised price (MAP) policy which excludes this product from any additional discount coupon codes. This item, however, may qualify for free shipping.
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!


  • Full Metal Receiver
  • Side folding stock
  • 20mm flat top rail receiver
  • Ventilated style gas tube
  • Adjustable front and rear sight
  • Removable rear sight
  • Front and rear QD sling points

FPS Range: 370-400

A&K has long been a player in the Airsoft AEG market and now they are poised to tackle an even larger segment of the market with their new NS15 series of AEGS. A&Ks NS15 series of Airsoft AEGs takes their already popular line up and modifies them in the factory with some of the most popular upgrades around. Internally the A&K gearboxes now feature a quick change spring system, which allows the user to modify the FPS of the gun easily and without having to disassemble the entirety of the gearbox. A&K replaced the standard 6mm gearbox bearings used in their previous gearboxes with the larger, more durable and efficient 8mm bearings as well as reinforcing the gearbox shell itself. All of these upgrades, now made standard improve the durability and reliability of A&Ks NS15 system and allow for the use of LiPo batteries up to 11.1V.

Length: 740mm, Full length
Weight: 10 pounds
Inner Barrel: ~363mm
Magazine Capacity: 450rd Hi-Capacity. Works with Matrix, G&G, Tokyo Marui and other compatible M4 / M16 Series Airsoft AEG Magazines
Muzzle Velocity: 370~400 FPS (Measured with 0.20g BBs)
Thread Direction: 14mm Negative
Gearbox: Ver 2 Full Metal, Fully Upgradeable
Motor: Long Type
Fire Modes: Semi/Full-Auto, Safety
Battery: 9.6v Small Butterfly Type recommended (Battery not included. Wired to front with Tamiya connector)
Hopup: Yes, Adjustable
Package Includes: Gun, Magazine, Manual


About A&K

A&K has been in business for more than a decade, boasting a huge selection of popular rifle models as well as unique platforms; Machine Guns, SMGs, DMRs, and even WWII replicas. A&K provides a great lineup of Airsoft products at a great value.

45 Customer Reviews

(Write a review)

by Josh V. on 11/21/2020
"Enjoyed Killzone 2 or STALKER? You'll love this gun.

Simple AEG that does the job the unique spin on the design of the M4. The heatshield and the handguard is all that is needed to catch eyes on the field. In terms of performance, it is pretty basic for what it is and the price, I was able to hit guys a little over 110 feet with .25g BBs. When I got it, I switched out the motor for an ASG 30K motor so I can get the preferred trigger response and rate of fire. The only thing I was disappointed in was that the charging handle is purely cosmetic, it does not flip open the dust cover. You need to manually pry it open and keep it open whilst adjusting the hopup. For 230 dollars, I expected a little more. Other from that I would recommend this gun to anyone looking for a unique M4.
by Kenneth J. on 10/20/2020
"If you're a Metal Gear Solid V fan, then you'll probably love this gun.

~Unique handguard
~Side folding skeleton stock
~Full Metal Receiver
~Unique hand grip

~Tight battery compartment (handguard itself)
~Orange flash hider is a pain to remove

Overall, this was my first AEG rifle I got for my 18th birthday. But I've had no major gripes or issues. I definitely recommend this as a beginner's AEG.
by Chris P. on 01/21/2020
"All I need to say about this gun that I have had it for 7 years, and I am still using it to this day.

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