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Specna Arms CORE Series M4 AEG (Model: M4 SBR / Half Tan)

ID: 33364 (AEG-SA-SA-C02-HT)
Specna Arms859188333642SPE-01-018316-0033364
4.7 stars, based on 25 reviews
Specna Arms CORE Series M4 AEG (Model: M4 SBR / Half Tan)
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Optic, suppressor, and other accessories not included
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Specna Arms


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!


  • Ultra lightweight fiberglass reinforced polymer receiver
  • Licensed Rock River Arms logos
  • Nylon fiber furniture
  • Metal barrel assembly, flash hider, charging handle, and sling swivels
  • ESA quick spring change system allows the spring to be changed without the need to disassemble your gun
  • Rotary type hopup with 6.03mm tight bore barrel
  • 380 fps spring pre-installed from factory, optional 310fps (M90) spring included to reduce muzzle velocity
Specna Arms meets the expectations of clients by presenting the CORE line of products - an exceptional series of replicas that introduces a new quality to the market. An attractive price in combination with an innovative spring change system as well as high-quality materials make this replica suitable for beginners and seasoned airsoft players alike.
The receiver, stock slide, handguard and a SF stock that holds the battery, as well as the pistol grip, were made from nylon reinforced polymer. Remaining components such as the barrel, flash hider, enlarged charging handle and tactical sling swivels were made of metal (parts made of steel include the screws, pins, shell ejection window and mock bolt carrier). The receiver bears markings and a serial number.
The replica's parts fit very well together and the User will not experience any loose spots between the lower and upper receiver. The use of a light polymer receiver allowed for a reduced weight, which makes it very suitable for dynamic games or long-lasting mil-sims. What's more, fiberglass reinforcement makes the receiver also more durable than polymer and metal receivers.

The replica features a ESA Quick Spring Change System. Due to that system, it is possible to rapidly and quickly adapt the power of the replica to the conditions expected on the playing field without the necessity to have the access to a workshop or a set of special tools - all that is required is to remove the stock slide in order to gain access to the spring so that it can be removed without having to pull out or disassemble the gearbox.
The advantages of ESA system are hard to overstate. In the light of the current internal regulations inside various groups, the system guarantees the User a varied set of possibilities and plenty of freedom. ESA system allows with a minimal amount of time to change the main spring, thusly customize the muzzle velocity towards the area of the game in such a way so as to guarantee an ideal compromise between the effectiveness of fire and safety for the User himself as well as other participants.

The replica is fully compatible with LiPo and LiFe batteries. Due to a base muzzle velocity of ~380 FPS provided by the main spring installed by default by the manufacturer, the replica is perfect for operating on a medium range. The set also includes an M90 spring, which allows reducing the muzzle velocity to ~310 FPS and as a result to adapt the replica for close-ranged and indoor operations.
The gearbox contains 8 mm slide bearings as well as shimmed steel gears based on them. The system is secured with four anti-reversal latches. A light, made of a polycarbonate polymer piston is equipped with a full steel strip, in order to increase its durability. Also, implemented were a type 0 cylinder and a steel circuit-breaker, as well as a precise rotary Hop-Up chamber. The durability of parts allows for the cooperation with M140 springs.
The precisely-made rotary type Hop-Up chamber perfectly fit with high quality 6,03 precision barrel. The use of precision barrel has a positive effect on the range and accuracy of the replica.

The replica is equipped with a 22 mm top RIS rail and an adjustable stock. The top RIS rail features a classic transport handle along with a rear sight. Due to the extendable stock with an anti-slip stock pad, it is possible to adapt the replica's length to the body type and preferences of the User. A standard flash hider is based on 14 mm left-handed thread, which allows the attachment of a silencer in its place.

Manufacturer: Specna Arms

FPS Range: 375-390


Length: 695mm - 780mm (Adjustable)
Weight: 2250g
Inner Barrel: 300
Magazine Capacity: 380rds
Muzzle Velocity: 310~380 FPS (Measured with 0.20g BBs)
Thread Direction: 14mm Negative
Gearbox: Ver 2 Metal, Fully Upgradeable
Motor: Long Type
Fire Modes: Semi/Full-Auto, Safety
Battery: 7.4v / 11.1v Buffer Tube LiPo Battery Recommended (Wired to rear w/ small Tamiya connector. Battery and Charger not included. We recommend using only high quality batteries and smart chargers)
Hopup: Yes, Adjustable
Package Includes: Gun, Magazine, Manual

About Specna Arms

Specna Arms is a brand manufactured in Hong Kong. Our aim is to deliver high-quality, good-looking and reasonably-priced Airsoft replicas. We are constantly developing both technical and visual aspects of our products to offer our customers the best airsoft experience.

25 Customer Reviews

(Write a review)

by Kun-Tak Y. on 06/26/2023
"Just to clear up any questions about the gun (I got the SA-C08/M4 CQB keymod), the handguard is 8 inches long, the orange tip is removable (I had to burn it off as I couldn't remove the set screw as it was glued in), it comes wired to tamiya but comes with a deans adapter, the stock can be replaced with a King arms pdw stock (you have to file some parts because of some slight fitment issues).
by Brooks B. on 05/30/2023
"This is THE best M4 for beginners in 2023. I’ve seen plenty of others online recommend it as well, including Evike themselves. It has good internals and externals, and by swapping the hop-up bucking and nub, it’ll much more accurately. I cannot stress this enough- if you want an airsoft M4 without dropping upwards of $200, this is the best gun you can get. If not an M4, try the CYMA CM040, CM045 and CM048 series.
by Daniel K. on 05/13/2023
"I got the Specna Arms SA-C09 Half Tan model and got a chance to test it out today (5/13/23).

In the Box (Gun Only option):
*SA-C09 gun
*Front and Rear Flip-up iron (polymer) sights
*Barrel Cleaner
*Hi-Cap Magazine (380rds)
*Quick-Springs (M120 installed and M90)
*Female Dean-Small Tamiya Connector Adapter
*Sticker sheet

Attachments/Accessories I bought for the gun:
*Avengers Enhanced Polymer 370 Round Hi-Cap Magazine for M4/M16 Series Airsoft AEG Rifles
*Matrix High Performance 7.4V Stick Type Airsoft LiPo Battery (Configuration: 1450mAh / 20C / Small Tamiya)
*Lancer Tactical 1 x 30 Mini Red/Green Dot Sight Airsoft Scope w/Picatinny Riser Black

I got this as my first airsoft gun believe it is a great quality one. This model shoots well on semi and auto-fire with no jams at the moment from the magazines. The magazine that it came with fits well. There's a very slight wobble but nothing too extreme for the magazine not to feed the gun properly (It seems that many magazines have a slight wobble with some not feeding the gun properly). I got another Hi-cap magazine and it works well too. The stock is sturdy and does have a wobble when wiggling it. However, there's no wobble while shooting. The two stock buffer tubes can fit a battery that is between 5 to 5 1/2 inches (not including wire). I would recommend getting a battery with a Deans plug with a regular, long, or short-length wire. Using the deans-tamiya connector adapter takes up space. I had to expand the stock to full length to have the battery I got to fit comfortably. I had to bend and fold the wires a certain way to get it to fit inside.

Overall, I have no regrets about buying this specific gun. I would definitely recommend this gun to others.

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