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KWA RM4 ERG SR10 AEG Airsoft Rifle (Black)

[Q11D00][32892 / 106-00303]
( 2 Reviews ) ❤ Add to Wishlist

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 KWA's 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.

Need to reach out and touch someone? No worries! The SR10 features a 16" bull barrel and 10" free float rail system, ensuring that you've got both the accuracy and rail accessory space to make those shots count. Wired to the rear and Li-Po ready out of the box, the SR10 boasts near unsurpassed reliability thanks to the one piece, full metal alloy upper receiver, 9mm ball bearing bushing combo, and case hardened steel gears. Paired with the signature KWA torque motor and a heavy spring, and you've got the perfect AEG for mid to long range engagements!

Utilizing KWA's patented Kinetic Feedback System, the SR10 also delivers felt recoil upon every shot! Combined with a unique cut-off system that detects when the magazine is empty (at either 30 or 120 round intervals), and you've got a very serious training tool with unparalleled realism on your hands as well.

Manufacturer: KWA
Model: RM4 SR10 AEG Airsoft Gun
Muzzle Velocity: 380-410 FPS
Magazine Capacity: 30/120 rds
Color: Black
Package Includes: Gun, Magazine
Warranty Length: 90 Days
Warranty Handler: KWA (Warranty Policy)


  • Kinetic Feedback System (KFS)
  • Mechanical / electric cut-off system
  • Improved high-torque motor
  • Enlarged trigger guard
  • Upgraded high-speed gear set
  • Switch Life Extender to prevent contact burnout
  • Quick-change spring set up
  • 30/120rd. magazine cut off compatibility
  • PTS Enhanced Polymer Grip
  • Rotary hop up
  • One-piece upper receiver

Please Note:

  • Accessories (i.e. optics, lasers, bipods, etc.) included by the manufacturer may vary.
  • Battery and charger are NOT included.

Manufacturer: KWA
Muzzle Velocity: 380-410 FPS
Magazine Capacity: 30/120 rds
Fire Mode: Safe - Semi - Auto
Color: Black
Battery Pack: Not Included
Package Includes: Gun, Magazine
Overall Length Extended: 927.10mm
Overall Length Retracted: 844.50mm
Weight Empty: 9.0 lbs
Inner Barrel Length: 425mm
Connector: Small Tamiya
see 2 reviews | Write a Review
D. KRAMER | 2018-07-11
Product Information:
Out of all the M4's in my arsenal this is my favorite. I always bring it with me when I play and even if I have a newer rifle to use I somehow always end up running with my SR10 because I absolutely love this gun. The full metal construction is great and the recoil from the KFS is amazing. I especially like the fact that it comes with an interchangeable 30/120 round mid cap magazine so if you are wanting a more realistic shooting experience then you have that option. When using the included mag it also makes the guns bolt catch and bolt release functional. Super cool if you are wanting a happy medium between an AEG and a GBBR. I also love the fact that it comes with the PTS EPG and PTS BUIS. I mean come on who doesn't like PTS stuff?! This gun is so much fun to shoot and I highly recommend this rifle to anyone looking for well built airsoft rifle with a heavy amount of recoil and a nice level of realism. The only things I really don't like about the gun are the battery storage in the crane stock is pretty limited (Should've came with the PTS EPS) and it doesn't come with a mosfet. Other than that it is a badass gun.

-Amazing heavy recoil
-Solid metal construction
-Good ROF with an 11.1(19-20 rps)
-Good FPS 410-415 out of the box but after putting 2,000+ rounds through it the spring settled to right around 400.
-Quality build all around(It is KWA)
-Functioning bolt catch and release when using KWA 30/120 mags
-Comes with PTS accessories
-As close to a GBBR in an AEG as you can get

-Heavy. With a battery and a loaded mag and accessories the gun is easily over 10lb (Some might not consider it a con)
-Limited battery storage in stock
-No mosfet
-Rails are sharp. You will definitely want to get some rail covers.
verified buyer
D. SCOZZARO | 2020-03-20
Product Information:
Now I don't want this review do give off the one I hate airsoft or have anything against airsoft gi. I purchased this gun after I realized how much fun I was having playing airsoft and how frequently I wanted to play. This was my first major investment into a gun that would function on the field and allow me to maybe do something for my team when I played. However I only got through one day of playing before the whole system broke down on me. When I was only halfway through the second day with a total of maybe 1,500 rounds put through the gun it stopped firing so I had to field strip the rifle and I noticed one of the biggest parts of the gun's internals that contributed to the functionality of the realistic bolt catch feature was stripped and kept the gun from being reloaded, feeding, and accessing the hop up properly. It's been 3 months since I reached out and I haven't heard from anyone at KWA even after I filled out the form to request maintenance within my warranty and as a result it's been 3 months since I last played my favorite sport.


Got mosfet on this model?
Does it have a mosfet

1708 days ago
Daniel R

(I have this same question)
Staff Answer:
These do not come with a MOSFET out of the box.

1534 days ago
1 answers
1 asked
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