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Weapon Shield 90

  • EXTENDED Industry Leading 90 Day parts and defects warranty
  • Covers for all repair work
  • Comprehensive Tech Support
  • Priority processing time, Ships within 1 business days
  • Shipping Insurance
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Weapon Shield Extended 135

  • TRIPLE EXTENDED Industry Leading 135 Day parts and defects warranty
  • Covers for all repair work
  • Comprehensive Tech Support
  • Priority processing time, Ships within 1 business days
  • Shipping Insurance

+ Tech Inspection

  • FPS Chronograph Certification
  • Gearbox Cleaning
  • Gearbox Lubrication
  • Fuse Replacement
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AMS Standard 45

  • Industry Leading 45 Day parts and defects warranty
  • Covers for all repair work
  • Comprehensive Tech Support
  • Standard processing time, 1-2 business days

AMS Proshop Warranty Options

Airsoft Megastore is proud offer our customers the most comprehensive warranty options in the industry. Orders are processed within our standard 1-2 business days from the date of purchase and shipped out with your selected shipping method (chosen at checkout). All accessories and upgrade parts are shipped within their manufacturer's packaging, to best protect each part during shipping. Upon arrival, the player will need to easily attach their own parts. Please be careful not to void your warranty by opening your gearbox, or damaging any of the accessories, as they are not covered under any warranty.

We suggest that anyone investing in a gun from our custom proshop purchase a weapon shield protection plan. There's no sense in spending your hard earned cash on something this awesome and then be at the mercy of the manufacturer's limited parts warranty. Purchase a weapon shield plan, 90 or 135 day plans to protect your airsoft investment. Our 135 day plan includes an inhouse tech service that you have 135 days to use. Our techs will do a clean up that should keep your airsoft investment running like the day you got it. All Weapon shield customers are prioritized for order processing as well as other services. Join the our satisfied Weapon Shield customers today!

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KWA Magpul Licensed RM4 PTS CQB ERG Full Metal Airsoft M4 AEG Rifle

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$299.95Guaranteed Lowest
  • Model: M4
  • Muzzle Velocity: 330 FPS
  • Build Material: Full Metal
  • Material: 6.5 lbs
  • Overall Length: 27" in. / 30” in.
  • Inner Barrel: 273 mm
  • Battery Type: 11.1V Stick
  • Gearbox: 3GX Kinetic Feedback System
  • Magazine Capacity: 30rd / 60rd PMAG
  • Color: Black
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3 Ways to get Free Shipping

  1. 1. Buy Any Regular Priced Item
  2. 2. or, Buy Any Sale Item + Any Non-Sale Item
  3. 3. or, Any Order Over $150
Free ShippingThis item qualifies for Free Shipping

Must Haves

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Our take:  Just like the full-length version, the RM4 PTS CQB comes with KWA’s new revolutionary Kinetic Feedback System (KFS) 3GX gearbox.  It’s also outfitted with a Magpul PTS lower receiver and MOE furniture.  The KFS system takes the recoil and realism you would normally expect from a GBB rifle and packs it all into the new RM4.  KWA has taken their proven 2GX gearbox and reinforced the internals for even more durability.  In addition, they added the unique cut-off system for quick crisp shots after every trigger pull.  They also reinforced the gearbox shell to withstand the impact of the KFS recoil.  Designed for professional training and hardcore players, this new KWA RM4 includes nearly all of the features of a GBB rifle with the convenience of an AEG.  With full metal internal and external parts and the new KFS 3GX gearbox, the RM4 PTS CQB proves to be one of the most well designed rifles on the market.

NOTE:  The included RM4 magazine will only work with the KWA RM4 ERG.  Other standard M4-style magazines will work with the RM4. However, the rifle will no longer have the mechanical / electric cut-off system if you do not use the RM4 magazines.

- Kinetic Feedback System (KFS)
- Full metal alloy flat top upper receiver
- Full metal Billet style Magpul lower receiver
- Adjustable hop-up
- 3GX gearbox
- 2G high performance bucking
- Mechanical / electric cut off system
- Magpul PTS RM4 PMAG
- Magpul PTS lower receiver
- Magpul PTS MOE hand guard
- Magpul PTS MOE pistol grip
- Magpul PTS MOE stock with recoil pad
- Magpul PTS MBUS rear sight

Operation:  Electric Automatic
Firing Modes:  Semi-automatic and Full-automatic
Build:  Metal Receiver, Gearbox, Barrel / Fiber Polymer Stock, Grip
Muzzle Velocity:  300 - 350 FPS (w/ 0.20g Bbs)
Rate of Fire:  14+ RPS w/ at least an 11.1v 15c Li-po
Magazine:  30 / 60 Round Polymer Mid Capacity Magazine
Gearbox:  Full Metal KWA 3GX Version 2 w/ Some Proprietary Parts
Battery:  11.1V LiPO Front Handguard (NOT Included)
Inner Barrel Diameter:  6.05 mm
Inner Barrel Length:  273 mm
Outer Barrel Length:  10.5" in.
Weight:  7.42 pounds
Hop-Up:  Polymer Adjustable One Piece
Overall Length:  27" in. / 30" in. (Retracted / Extended)

Ammo type:  Seamless 0.20g or heavier (0.23g, 0.25g, 0.26g, 0.28g, etc) BBs.  For maximum performance and accuracy, Airsoft Megastore recommends GoldenBall ProSlick BBs which carry perfect spherical consistency and density, available at Airsoft Megastore for the lowest price on the market, guaranteed.

Package Includes:  KWA RM4 ERG, 1x 30 / 60 Round Mid Capacity Magazine

Color:  BLACK

GUN FORGE - Custom Built by AMS Customers

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Product Reviews

5 KWA Magpul Licensed RM4 PTS CQB ERG Full Metal Airsoft M4 AEG Rifle *****

"What can I say? It's great. It has all the advantages a electric gun has but it still has a blow back feature which's is a lot more impressive then I thought it would be. It has more kick then my KWA Kriss Vector does! :D"

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The store is amazing. I have found there items that I could not find in other stores which makes it the best. I have made questions and inquires about products and the customer service has responded super fast with accurate answers. All my products have arrived in excellent conditions in spite of other stores. My last product came late because it was rescheduled but that was UPS fault I think. I would like to thank Matthew for his exceptional customer service. Whenever you need help, please try to contact him. My advice, buy in Airsoft Megastore, they have coupons and the widest variety of airsoft products. RandyLoy, USA
I ordered a gun sling a couple weeks ago. Unfortunately, one of the clips broke. After a few email correspondings with a customer service representative named Jun (my emails did not show a last name), AMS sent me a replacement sling for free. I did not even have to send my clip back. AMS is a terrific store and I plan on doing more business with them. They were polite, efficient, and just a pleasure to work with. I would recommend Airsoft Megastore to anyone. mskanwischer, USA
Airsoft Megastore is The Best Airsoft Website Out There (I Think) and i Will Always Be Loyal to AMS and Order Almost All of my Gear From Them. The Customer Service is Also Amazing, Jun my Customer Service Representative Has Helped Me With Anything i Needed Help With, Especially My Order Problem (Had 2 Magazines Missing from Order) and Jun Helped Me With The Problem, and Now The Mags Have Been Shipped To Me. Thank You So Much AMS and Jun. Ethan1214, Saskatchewan, Canada
I love that Airsoft Megastore has videos of most any information you will need to learn and care for your products. I purchased an AEG for my son and in short order, unfortunately, it began grinding after brief use. I emailed for warranty repair with symptoms and with 24 hours (22 to be exact) I received an email explaining possible causes with a video like for tuning the gun. I had the gun working again within 15 minutes, avoiding returning the gun and the mess associated with returns\repairs. Excellence on Sean's part to help out a first time customer of theirs. Highly recommend. bucfanjeff, USA
Everything worked great, shipping was super fast. I am very pleased and won't hesitate to order through airsoft megastore again. rob_riley, USA
I loved buying from airsoft megastore because the employees helped me recover my tracking number and told me where the package was at, I would love to buy from airsoft megastore again! Battlefield4Rule, USA
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