Description, Features & Specifications

Description

This Golden Eagle Polymer M4 Lower Receiver gets you a complete package that includes a fully functional Version 2 metal gearbox with a high torque motor. An M120 spring comes standard that can generate a muzzle velocity that is consistently above 400 FPS (w/ 0.20g BBs). Since the gearbox is rear-wired you can install nearly any style stock including SOPMOD, Crane, and fixed rifle stocks. An integrated hop-up chamber is directly compatible with all Golden Eagle polymer M4 upper receivers with a two piece hop-up unit. This lower is ONLY compatible with GE polymer uppers. Metal receivers are not compatible.

In the Box

Specifications:
Gearbox Specifications
Type Full Metal Version 2 (Rear Wired)
Shell Construction Aluminum
Shell Color Black
Motor High Torque Long Type
Gears High Torque Steel
Bushings 6mm Metal
Spring M120 Standard Pitch
Spring Guide Full Metal
Cylinder Metal Ported
Cylinder Head Polymer
Piston Polycarbonate w/ 1 Steel Tooth
Piston Head Polymer Ported
Air Nozzle Polymer
Tappet Plate Reinforced Polymer
Wiring Standard Wiring(Rear)
Lower Receiver Specifications
Construction Polymer
Compatibility Complete Polymer Upper Receivers
Weight 2.2 lbs
Color Black w/ Tan Grip

California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Description

This Golden Eagle Polymer M4 Lower Receiver gets you a complete package that includes a fully functional Version 2 metal gearbox with a high torque motor. An M120 spring comes standard that can generate a muzzle velocity that is consistently above 400 FPS (w/ 0.20g BBs). Since the gearbox is rear-wired you can install nearly any style stock including SOPMOD, Crane, and fixed rifle stocks. An integrated hop-up chamber is directly compatible with all Golden Eagle polymer M4 upper receivers with a two piece hop-up unit. This lower is ONLY compatible with GE polymer uppers. Metal receivers are not compatible.

In the Box

Specifications:
Gearbox Specifications
Type Full Metal Version 2 (Rear Wired)
Shell Construction Aluminum
Shell Color Black
Motor High Torque Long Type
Gears High Torque Steel
Bushings 6mm Metal
Spring M120 Standard Pitch
Spring Guide Full Metal
Cylinder Metal Ported
Cylinder Head Polymer
Piston Polycarbonate w/ 1 Steel Tooth
Piston Head Polymer Ported
Air Nozzle Polymer
Tappet Plate Reinforced Polymer
Wiring Standard Wiring(Rear)
Lower Receiver Specifications
Construction Polymer
Compatibility Complete Polymer Upper Receivers
Weight 2.2 lbs
Color Black w/ Tan Grip

California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Earn 0 points on this purchase.

Learn more
XTREME Superstore by Golden Eagle

GE-MB-50

Golden Eagle M4 Polymer Lower Receiver - TAN/BLACK

$87.09
$87.09
Shipping calculated at checkout.
Get FREE Returns within 14 days.
Add Free Returns to your cart for extra peace of mind.

XTREME Returns

As a small business, we face a choice: we can either raise all of our prices to cover the cost of returns, or we can keep our prices low and offer an optional Return Guarantee. We chose the second option because it's fairer to you. That $5 goes directly toward the logistics of a pre-paid return, meaning you get a "no-questions-asked" experience without us having to inflate the cost of every item in our shop. It keeps us independent and keeps your wallet happy. When you shop with us, your order isn’t just a number—it’s handled by a small team that cares about the gear we sell. Because we don't have the massive overhead of a giant company, we use this $5 guarantee to bridge the gap. It provides you with a pre-paid, priority return path, ensuring that if you need to send something back, we can process it immediately and get your refund or exchange moving. Thank you so much for understanding.
Free shipping on orders $200 and above.
Free fast shipping! Excludes very heavy items like Bulk BB Bags.

Free Shipping

Get free shipping on all orders above $200. This excludes certain items such as bulk BBs, or any sort of item that requires special handling (such as hazmat).
Pay any way you want, securely.
We accept all major cards, Afterpay, PayPal, Crypto, Apple Pay, Cash App & More. Obviously, all payment info is encrypted.

Payment Methods

We accept a wide variety of payment methods to ensure our customers can get what they want from us without hassle. Like many online stores, we use Shopify Payments. Their platform, which is partnered with Stripe, is secure. Looking for a payment method which is currently unavailable? Please let us know! We will look into it ASAP.
Free In Store Pickup!
Pick your items up at our field for FREE.

Free In Store Pickup!

Ship your item to our store free! We will ship your item directly to our shop if we don't have it there already. Otherwise, you can just pick up your item immediately if it's currently stocked in store.

Join our Rewards Program and earn points on every order! No other Airsoft shop has a system like this!

Join Now

Check Out These Related Products

Best Sellers