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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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G&G GR4 100Y CQB Electric Blowback M4 Airsoft AEG Rifle - BLACK

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  • Model: M4
  • Muzzle Velocity: 350 FPS
  • Build Material: Nylon Fiber Body
  • Weight: 6.25 lbs
  • Overall Length: 20" in. / 30" in.
  • Inner Barrel: 230 mm
  • Battery Type: 7.4V Stick
  • Gearbox: Version 2 (Metal)
  • Magazine Capacity: 450 rounds
  • Color: Black
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BB CombosBBsExtra MagazinesFace & Eye ProtectionGun BagPremium BatteriesSmart Charger for AEGsUniversal Tactical Sling

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Our take:  The NEW G&G Full Metal Gearbox Pneumatic Blow Back GR4 100Y AEG is a modular and compact CQB airsoft carbine, perfect for fast paced room clearing and cornering in confined spaces such as indoor CQB airsoft fields. The GR4 100Y features an comfortable folding stock, a seamless top optics rail, and a modular nylon fiber rail system! The GR4 100Y also utilizes G&G’s revolutionary patented pneumatic blow back Version 2 full metal gearbox, which cycles the mock bolt with every shot fired. This unique feature adds an amazing sense of realism, and minimizes wear to the gearbox. The NEW GR4 is a high-quality, high-performance CQB rifle, that costs much less than most comparable CQB Blow Back AEGs.  Though this AEG looks as though it is only designed for close quarters combat, it can easily reach out and hit targets up to 150 feet away.  This G&G GR4 is an amazing bargain, due to its precision internals, pneumatic blow back Version 2 gearbox, and aggressive design!

One of the most unique features of the NEW G&G GR4 100Y AEG is its side folding stock, which allows you to quickly and easily deploy the stock for long range engagements or fold it to the side for close quarters combat.  This feature is perfect for indoor airsoft scenarios and during fast paced games when you need to quickly move with your weapon.  The GR4 100Y also features an extremely rugged Nylon Fiber reinforced polymer upper and lower receiver, which decreases the AEG's weight and maintains structural integrity.  The GR4’s rail system is also constructed from nylon fiber, and features over 18 inches of rail spce!  Additional optics and accessories can be easily added to the 12 inch seamless metal top rail, which also feature removable front and rear iron sights.  If you’re tired of traditional M4 AEGs and want something with unique aesthetics, a lightweight design, and rugged construction the NEW G&G GR4 100Y AEG is perfect for you!

G&G has reinforced the build of the gearbox to be on par with their more-expensive "Top Tech" line of $350+ AEGs, making this Blow Back GR16 CQW Rush an amazing value!  In addition, the internals have been enhanced right from the factory to deliver an extremely high rate of fire [ROF] right out of the box!
G&G’s pneumatic blowback gearbox uses air compression to drive the mock bolt back and forth, reducing stress on the gearbox and improving shot consistency.  Add in a precision crafted inner barrel, and you have an amazingly SOLID fully automatic Blow back CQB AEG at an unbeatable price!

- Full Nylon Fiber Construction w/ Full Metal Top Rail
- Full Metal Pneumatic Electric Blowback Version 2 Gearbox
- Full Metal Side Folding Stock w/ Polymer Coating
- Removable metal front and rear iron sights
- Lightweight Compact Design
- 30” in. of Combined Rail Space
- Crisp and Reliable Blowback Action
- Ergonomic Textured Grip
- Aggressive plastic flash hider
- Easy access battery compartment
- 12 inch Top Optics Rail
- 2x QD sling mount attachment points (QD sling mount NOT Included)

Operation:  Electric Automatic, Pneumatic Electric Blowback
Build:  Nylon Fiber body, Full Metal Gearbox
Firing Modes:  Semi-automatic and Full-automatic w/ Blowback
Muzzle Velocity: 330-350 FPS with 0.20g BBs
Magazine: 450-round high capacity (gear wind-up)
Gearbox:  Full metal G&G Pneumatic Blowback Version 2
Inner Barrel:  230mm, 6.05mm
Outer Barrel Threading: 14mm CCW (Counter Clockwise)
Battery Type: Stick Type 7.4v LiPO Battery (Not Included)
Hop-up:  Adjustable One Piece Hop Up
Weight:  6.25 pounds
Overall Length:  20”-30”in. (Folded-Extended)

Color: BLACK

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.

NOTE: This G&G AEG DOES NOT include a battery or charger.  CLICK HERE to the recommended battery for this gun.  LiPO batteries should only be charged using LiPO balance chargers, CLICK HERE to view our LiPO chargers.

Package includes: Rifle, instruction manual, 450-round high capacity magazine,

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Product Reviews

5 G&G GR4 100Y CQB Electric Blowback M4 Airsoft AEG Rifle - BLACK *****
Flipping AMAZING!!!

"This gun was actually the first gun i had bought from airsoft megastore and i must say their speed on getting it here in NC was pretty fast but anyways right out of the box it was light and strong. I added a foregrip and an acog sight and that really added some weight. Getting a sling would be smart to do. I also put in a 11.1 lipo battery and i got it to shoot at about 15-17 bb's a second. and about 850 rounds per minute. consistently shot at 341.2 fps (which is good for cqb). The blowback on this thing is amazing, crisp and clean. Got peoples attentions when i shot it lets just say that. One last thing, the floding stocks pin on the top does tend to slide out at times and the baterry compartment pin fell out while playing so i got a finishing nail and it fit perfectly for it so over all im really impressed with it!"

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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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