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KWA USA Full Metal RM4 SR-10 AEG3 M4 Carbine Airsoft AEG Rifle

ID: 77135 (AEG-106-00303)
KWA USA Full Metal RM4 SR-10 AEG3 M4 Carbine Airsoft AEG Rifle
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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!


  • Electronic Recoil system mimics GBBR style blowback in a reliable AEG platform
  • Full metal receiver and barrel assembly
  • Quick change spring system makes changing FPS quick and easy
  • Switch life extended helps protect trigger contacts, improving life span and reliability
  • High speed gear set provides shooter with a high rate of fire
  • Polymer furniture with PTS EPG grip
  • Magazine cut off capability
The new KWA AEG 3 RM4 SR10 is the third model in the new 3rd gen AEG family. This updated ERG model now shares the the newest features of the recently introduced AEG 2.5 system, PLUS simulated recoil with KWAs patented Kinetic Feedback System. Highlighted by a Switch Life Extender to minimize the wear and tear on trigger contacts, the AEG 3 combines ultimate AEG rifle with a more cost-effective training solution to provide players and professionals the best airsoft experience. Additional features include magazine cutoff compatibility combined with a quick-change spring for users to customize their KWA AEG rifle to their own specifications.

The new KWA AEG3 RM4 SR10 is an intermediate rifle that is designed for medium to long range engagements. Outfitted with a 16″ bull barrel and a 10″ free float rail system, operators are able expand the weapon system with various weapon attachments. This updated ERG takes professional airsoft training to a new level of performance with a one-piece full metal alloy upper receiver, enlarged trigger guard, a new rotary hop up and a PTS Enhanced Polymer Grip for added comfort. Rear-wired and Li-Po ready, the AEG3 RM4 SR10 can still handle the extra power of LiPo batteries. The new KWA AEG3 RM4 SR10 is also equipped with a reinforced metal gearbox utilizing KWAs unique 9mm ball bearing bushing combination and case hardened, upgraded precision metal gear sets. Heavy duty springs and a new high-torque motors are matched for optimum results.

This updated SR10 also utilizes the patented Kinetic Feedback System [KFS]. This gives the user felt recoil with every trigger pull. This updated KWA AEG3 RM4 SR10 also features a mechanical/electrical cut-off system to stop firing when the magazine is empty at 30 and 120 rd. intervals. Standard features of the AEG3 RM4 SR10 include metal alloy receivers, MilSpec buffer tube and stock, a flat top rail, which allows operators to customize their weapon configuration, and an operational bolt catch feature that provides the user with unparalleled realism by mimicking fundamental AR15 weapon manipulation. Similar to real AR15 style rifles the AEG3 RM4 SR10s modular design allows limitless customization options to best suit the individuals training and MilSim needs.that utilizes the patented Kinetic Feedback System [KFS]. This gives the user felt recoil with every trigger pull.

Manufacturer: KWA

FPS Range: 380-410


Length: 844.5mm - 927.1mm
Weight: 3360g
Inner Barrel: 425mmmm
Magazine Capacity: 30/120rd Mid Capacity. Works with KWA M4 / M16 Series Airsoft AEG Magazines
Thread Direction: 14mm Negative
Gearbox: AEG3 Full Metal
Motor: Long Type
Fire Modes: Semi/Full-Auto, Safety
Battery: 9.6v Small Butterfly Type recommended (Battery not included. Wired to stock with Deans connector)
Hopup: Yes, Adjustable
Package Includes: Gun, Magazine, Manual, Tool

About KWA

Established in 1988, KWA has been the leadingdesigner and manufacturer of airsoft replica weapons for law enforcement and military training. Its reputation for quality, performance, and reliability makes KWA a recognized leader in professional airsoft products.In a time when airsoft development is focused on external replications and logos, KWA has been advancing airsoft technologies with the introduction of the NS2 Gas Blowback System and the 2GX Mechbox. Both product advancements increase the overall performance and reliability beyond all conventional standards of the industry. These products represent KWAs commitment to excellence and passion for engineering products that simply outperform.KWAs state-of-the-art manufacturing facility is located in Taiwan with an independent sales and distribution operation in the United States that services the Americas and all European Regions.

6 Customer Reviews

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by Dillan M. on 02/22/2023
"It works well right out the box with a good 11.1. Its really accurate and feels pretty close to a GBBR. I had to do some upgrades to my TM NGRS but this is pretty solid with OEM parts. The mags are good, and I like the ability to switch between milsim and midcap mags on the fly, with just the flick of a switch on the bottom of the magazine itself. The stock wiring in the stock and the stock itself are horrible. I put a milspec b5 stock on that had more room and shortened the cables so everything can fit comfortably. Range is outstanding, and it hits hard with 0.32's. Trigger response is fairly good, nothing amazing.
by Dave K. on 02/01/2023
"Great build quality. Good range and the recoil on these are a lot of fun. The PTS furniture just puts this KWA ERG over the top. Great alternative for those wanting to add a bit more realism to their gameplay but don't want to hassle with owing a GBBR. Very sturdy externals and the performance isn't amazing but will easily hop .30s out to 200ft and would make a great 2nd or 3rd rifle for weekend skirmishes just because of how fun it is to get that extra recoil from your shots. 9/10 from me. KWAs are still top 5 in my opinion just on quality and realism alone. The only con is when fully dressed up with an optic, lights, and batteries and bbs the rifle is on the heavier side. I wouldn't recommend for younger players because a 10-12lb AEG does get heavy if you are planning on running it for longer games or any milsim OPs. Still a great replica in my opinion. Defintely wortn the $400 price tag.
by Göksenin S. on 03/22/2019
"Overall excellent gun, fires about 400-410 FPS. Metal body and blow-back feels like a real M4. Only downside of the gun, if it counts as a downside, is hop-up takes sometime to get ready and fire accurate shots. You need to spend one magazine of 100 BBs in order to warm it up.

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