Golden Eagle MC6642 M4 KeyMod GBBR

Golden Eagle
Code: MC6642
£229.99
  • Ultra-realistic GBB rifle
  • Realistic sized reciever 
  • Unique triangular KeyMod handguard

If you have been looking to take the realism of your Airsofting experience to the next level, look no further! This GBBR by Golden Eagle provides heightened realism over any AEG with its reciprocating full-sized bolt carrier, soul shattering recoil and realistic bolt hold-open function, all at a price point unheard of for a Gas Blowback rifle.

Full description

Description

The Golden Eagle MC6642 is a Gas Blowback rifle powered by green gas, featuring a unique ultra-sleek modern KeyMod handguard with a comfortable triangular profile, and an extremely realistic firing experience. If you have never fired a GBBR, you are missing out, imagine a GBB pistol on steroids...that's this rifle! With every shot the full-sized realistic bolt carrier slams back against the buffer and spring, providing immersive recoil. When your magazine is empty, the bolt will lock back on the bolt release catch, indicating that you have an empty rifle, just like a real AR.

Starting at the tip of the barrel, we can find an alloy muzzle brake style flash hider, providing a modern and aggressive look to the business end of the rifle. The muzzle brake can be easily swapped for a suppressor, tracer unit or another muzzle device which mounts on 14mm CCW male threads, which are provided at the tip of the alloy outer barrel. 

The outer barrel of the MC6642 is 14.5 inches in length, containing a 363mm inner barrel to provide a handy, carbine length package which is capable of handling CQB as well as longer ranged encounters.

The inclusion of an adjustable HOP-up unit provides the additional range to engage targets at greater distances. The rotary HOP-up adjuster can be found on the underside of the outer barrel and is accessible when the handguard has been removed. The handguard can be removed by removing the two large Allen bolts on the left side of the handguard, after which the handguard can be pulled forward over the barrel and off the rifle. 

The handguard itself provides KeyMod attachment slots at the 3, 6, and 9 o'clock positions, with attractive vents on either side, completing the lightweight, skeletonized look of a modern tactical rifle. This handguard allows KeyMod Picatinny rail sections, vertical foregrips and rail covers to be attached with ease wherever you need them. The handguard also provides a long Picatinny rail at the 12 o'clock position which mates seamlessly with the receiver rail, providing plenty of attachment space for longer optical sights, PEQ laser units, and red dot and magnifier combos. 

The MC6642 comes supplied with flip-up aperture iron sights which are adjustable for both windage and elevation, providing two fine rear apertures which can be flipped between for aiming and long range, or in low light without the need for tools. The sights come pre-installed on the rifle's 12 o'clock rail, but can be easily removed and replaced with an aiming device of your choice. These sights are "Troy" style iron sights, and are protected on either side with built in wings, preventing an inadvertent bump or scrape from messing with your sight's zero. 

The receiver of the MC6642 is similar in form to every other AR out there, with the exception being that because it does not contain a gearbox, the receiver can be realistic sized. This results in a slim feel to the rifle, and a positively skinny pistol grip, marking this out as a GBBR and making it genuinely hard to distinguish from a real AR. Obviously, this doesn't make it better or worse for skirmishing, but if you are like us and appreciate attention to detail and faithfulness to the real article, you will feel a strange sense of satisfaction handling this bad boy. The rifle's pistol grip is a unique custom style grip, with deep linear texture across all surfaces and thumb grooves on either side to provide a comfortable hold and encourage a proper firing grip. This grip is also realistically sized and is compatible with any pistol grip for the WA or G&P GBBR system, and real AR15 grips with minor modification.

The MC6642 has familiar AR15 controls, the only difference is that more of them function in a GBBR! The Selector switch appears on the left side of the lower receiver, above the pistol grip. The fire selector provides 3 positions, helpfully marked SAFE, SEMI and AUTO, and has a 90-degree throw between the fire modes. Like the real AR15, this rifle cannot be placed on SAFE when the hammer is not cocked, so if you want to safe your rifle please do not force the selector switch, if it won't move the rifle probably isn't cocked! The rifle's magazine release can be found on the magazine well on the right side of the rifle, sitting conveniently within reach of the trigger finger, making reloads easy and quick.

The charging handle can be found a the top rear of the rifle and is of a standard M4A1 profile, keeping the rifle slim and slick sided to prevent snags on gear and make the rifle faster to manipulate, and more comfortable to sling. The  bolt release catch can be found at the centre of the left side of the receiver. When the magazine of the MC6642 is empty, the bolt will be held open, just like the real thing, indicating that the rifle is empty. This allows a quick magazine change, followed by a slap on the bolt catch to send the bolt home, ready for the next shot. Whilst there are aftermarket solutions which allow the bolt release to be operated from either side, this isn't strictly necessary, as the right-handed user can release the bolt with their thumb after inserting a fresh magazine, and the left-handed user can do the same but with their trigger finger, with no modification needed to the rifle's controls.

At the rear of the receiver, we can find a 6 position AR15 buffer tube with a low profile sliding stock mounted to it. This buffer tube is compatible with any aftermarket M4/AR15 stock designed for an AEG, as well as real steel stocks designed for "Milspec" buffer tubes. The receiver is closed off with a plain receiver plate, but this can be replaced with sling plates designed for the Airsoft GBBRs. Please note, AEG sling plates are not compatible with this rifle. The stock mounted on this rifle has a low profile adjustment lever, reducing the chances of a snag, and features QD sling points on either side, which can be used together with a KeyMod or Picatinny sling mount (not included) to attach a 2 or 3 point sling. The butt plateat the end of the stock is rubberized and also features an angled section to assist in shouldering the rifle whilst wearing body armour. The rubberised surface of the butt plate also features deep linear texture to ensure the rifle stays firmly in your shoulder under the intense recoil forces of this GBBR!

The MC6642 is based on the Western Arms GBBR design, the original GBBR, and regarded by many as the most realistic GBBR system out there. The rifle's fire control parts are a spitting image of the real AR, even down to the shape of the hammer itself. The bolt carrier is realistically sized and packs plenty of weight, giving this rifle is jaw rattling recoil. One of the weaknesses of GBBRs in general tends to be their bolt catch, which eventually wears away and stops functioning. Golden Eagle has seen to this, by providing a steel bolt catch out of the box. This GBBR is compatible with Western Arms magazines, G&P WOC magazines and any other GBBR magazine designed for the WA system, although it will work best with Golden Eagle branded magazines.

Features

  • Aluminium handguard with polymer reciever 
  • Triangular KeyMod rail pre-installed
  • Realistic recoil impulse
  • Stops firing when empty
  • Steel bolt catch
  • "Troy" style flip up iron sights
  • Functional bolt hold open and release
  • Full sized reciprocating bolt carrier
  • Aggressive looking muzzle brake
  • Realistically sized receiver and pistol grip
  • Ambidextrous charging handle
  • Rotary adjustable HOP-up unit
  • 14mm CCW male barrel threads
  • Unique ergonomic pistol grip
  • Low profile M4/AR15 sliding stock with QD sling sockets

Package Includes

  • Golden Eagle MC6642 M4 KeyMod GBBR
  • 50rnd Golden Eagle GBBR Magazine (WA / G&P System)
  • User manual

Specification

General

Weapon Construction External
Weapon Type
Assault Rifle
Over 18 Only Icon
Over 18
Yes
Icon UKARA - United Kingdom Airsoft Retailer Association
Defence / UKARA Required
Yes, No,
FPS Icon
FPS (Feet Per Second), using 0.20g BB
Approx. 310fps ± 10%, using 0.20g BB
Site Legal Icon
Site Legal, using 0.20g BB
Yes
Screwdriver Icon
Pre-Built
Yes
Package
Included Items
  • Magazine
  • Instruction Manual
Skill Level Icon
User Skill Level
Experienced Player
Patrol Base - Warning Icon
Warnings
Lubrication is required

Weight and Dimension

Weight KG Icon
Weight (KG)
Approx. 2.06kg
Weapon Length Collapsed
Length (Collapsed)
81cm
Weapon Length Extended
Length (Extended)
89cm

Construction

Colour Wheel Greyscale
Primary Colour
Black
Construction Icon
Construction
Aluminium handguard. Alloy outer barrel, flash hider, bolt carrier, buffer and trigger group. Steel pins, screws and springs. Polymer upper and lower receiver. Polymer stock and pistol grip.
Weapon Construction External
External Construction
Polymer
Alloy
Aluminium
Steel
Gearbox Icon
Internal Construction
Polymer
Alloy
Aluminium
Steel

Weapon Specific

Power Source Icon
Powered By
Green Gas
Blowback Icon
Blowback
Gas Blowback
Weapon Platform
AR Platform, M4 / AR15 / M16, Long Gun, Assault Rifle,
Magazine Style Icon
Magazine Style
Long Gun Magazine, Assault Rifle, M4 / AR Platform, WA / G&P system M4 GBBR Magazine,
Fire Select Icon
Fire Selector
PatrolBase | Fire Select Safe
Safe
Patrol Base | Fire Select - Semi Automatic
Semi Automatic
Patrol Base | Full Automatic
Full Automatic
Weapon Safety Features Icon
Safety Features
Trigger Lock
Shooter Configuration Icon
Shooter Configuration
Right Handed
Weapon Configuration Icon
Weapon Configuration
Standard
Weapon Scale Icon
Weapon Scale
1:1
Suggested BB Weight
0.25g

Hop-Up

Hop-Up Unit Icon
Hop-Up Unit
Yes
Hop-Up Unit Adjuster Icon
Hop-Up Adjuster
Rotary
Hop-Up Unit Location Icon
Hop-Up Location
On the outer barrel, accessible when the handguard is removed.

Furniture

Weapon Furniture Icon
Furniture
  • Railed Handguard
  • Flip-Up Ironsights
  • AR Buffer Tube
  • KeyMod Handguard
  • Railed Receiver
  • Sliding Stock
  • Ergonomic Pistol Grip
  • QD Sling Point
  • Muzzle brake style flash hider
Rail System Icon
Rail System
20mm RIS / RAS , KeyMod , 20mm Railed Receiver,
Icon Stock Positions
Stock Setting
Sliding
Weapon Length Extended
Stock Positions
6 Position
Sight Type Icon
Sight Type
Iron Sights , Aperture Iron Sight,
Sling Plate Icon
Sling Options
QD

Barrel

Outer Barrel Length (in)
14.5''
Icon Thread Type
Outer Barrel Thread Type
Male
Icon Thread Direction
Outer Barrel Thread Direction
CCW (Counter Clockwise)
Outer Barrel Thread Size
14mm
Inner Barrel Diameter
6.08mm
Inner Barrel Length
363mm

Magazine Specific

Magazine Type
Low Capacity , Gas,
Magazine BB Capacity
Approx. 50 Rounds
Magazine BB Fill Method
Speed Loader
Magazine BB Fill Location
Top
Magazine Gas Fill Location
Back
Magazine Gas Type
Green Gas

Gas Gun Specific

Gas Can Icon
Gas Compatability
Green Gas
Gas Can Icon
Gas Recommendation
Green Gas

Product Testing Data

Notepad Icon
Test Description
310 FPS +/- 10%
Notepad Icon
Tested Using
0.2g ASG BLASTER
Notepad Icon
Test Date
01/04/2022

Size guide

Joule Charts

Special Instructions

These table can be used as a reference to see if the BB weight you are using will be over acceptable Joulage limits at some Airsoft Sites in the UK. To check if the weight can be used chrono your weapon using the BB you intend to use, and then compare it to the chart.

FPS, Power and Joule Limits can vary from site to site, so please get in touch with where you're going to play with in advance to avoid disappointment.

Suggested limits are based on Joulage Limit rules used Halo Mill: Proving Grounds, with a 350fps limit for Automatic Replicas, 400fps for Semi-Automatic Replicas, and 500fps for Bolt Action Replicas.

Tap the tabs below to open the relevant chart for your replica.

Suggested limits are based on Joulage Limit rules used Halo Mill: Proving Grounds, and is the equivalent of 350fps, using 0.20g BB resulting in an upper limit of 1.14j.

Velocity BB Weight (Grams)
FPS 0.20 0.25 0.28 0.30 0.32 0.36 0.40 0.43 0.45 0.50
250 0.58 0.73 0.81 0.87 0.93 1.05 1.16 1.25 1.31 1.45
260 0.63 0.79 0.88 0.94 1.00 1.13 1.26 1.35 1.41 1.57
270 0.68 0.85 0.95 1.02 1.08 1.22 1.35 1.46 1.52 1.69
280 0.73 0.91 1.02 1.09 1.17 1.31 1.46 1.57 1.64 1.82
290 0.78 0.98 1.09 1.17 1.25 1.41 1.56 1.68 1.76 1.95
300 0.84 1.05 1.17 1.25 1.34 1.51 1.67 1.80 1.88 2.09
310 0.89 1.12 1.25 1.34 1.43 1.61 1.79 1.92 2.01 2.23
320 0.95 1.19 1.33 1.43 1.52 1.71 1.90 2.05 2.14 2.38
325 0.98 1.23 1.37 1.47 1.57 1.77 1.96 2.11 2.21 2.45
328 1.00 1.25 1.40 1.50 1.60 1.80 2.00 2.15 2.25 2.50
330 1.01 1.26 1.42 1.52 1.62 1.82 2.02 2.18 2.28 2.53
335 1.04 1.30 1.46 1.56 1.67 1.88 2.09 2.24 2.35 2.61
340 1.07 1.34 1.50 1.61 1.72 1.93 2.15 2.31 2.42 2.68
345 1.11 1.38 1.55 1.66 1.77 1.99 2.21 2.38 2.49 2.76
350 1.14 1.42 1.59 1.71 1.82 2.05 2.28 2.45 2.56 2.85
355 1.17 1.46 1.64 1.76 1.87 2.11 2.34 2.52 2.63 2.93
360 1.20 1.51 1.69 1.81 1.93 2.17 2.41 2.59 2.71 3.01

Suggested limits are based on Joulage Limit rules used at Halo Mill: Proving Grounds, and is the equivalent of 400fps, using 0.20g BB resulting in an upper limit of 1.49j.

Velocity BB Weight (Grams)
FPS 0.20 0.25 0.28 0.30 0.32 0.36 0.40 0.43 0.45 0.50
250 0.58 0.73 0.81 0.87 0.93 1.05 1.16 1.25 1.31 1.45
260 0.63 0.79 0.88 0.94 1.00 1.13 1.26 1.35 1.41 1.57
270 0.68 0.85 0.95 1.02 1.08 1.22 1.35 1.46 1.52 1.69
280 0.73 0.91 1.02 1.09 1.17 1.31 1.46 1.57 1.64 1.82
290 0.78 0.98 1.09 1.17 1.25 1.41 1.56 1.68 1.76 1.95
300 0.84 1.05 1.17 1.25 1.34 1.51 1.67 1.80 1.88 2.09
310 0.89 1.12 1.25 1.34 1.43 1.61 1.79 1.92 2.01 2.23
320 0.95 1.19 1.33 1.43 1.52 1.71 1.90 2.05 2.14 2.38
330 1.01 1.26 1.42 1.52 1.62 1.82 2.02 2.18 2.28 2.53
340 1.07 1.34 1.50 1.61 1.72 1.93 2.15 2.31 2.42 2.68
350 1.14 1.42 1.59 1.71 1.82 2.05 2.28 2.45 2.56 2.85
360 1.20 1.51 1.69 1.81 1.93 2.17 2.41 2.59 2.71 3.01
370 1.27 1.59 1.78 1.91 2.03 2.29 2.54 2.73 2.86 3.18
380 1.34 1.68 1.88 2.01 2.15 2.41 2.68 2.88 3.02 3.35
390 1.41 1.77 1.98 2.12 2.26 2.54 2.83 3.04 3.18 3.53
400 1.49 1.86 2.08 2.23 2.38 2.68 2.97 3.20 3.34 3.72
410 1.56 1.95 2.19 2.34 2.50 2.81 3.12 3.36 3.51 3.90

Suggested limits are based on Joulage Limit rules used at Halo Mill: Proving Grounds, and is the equivalent of 500fps, using 0.20g BB resulting in an upper limit of 2.32j.

Velocity BB Weight (Grams)
FPS 0.20 0.25 0.28 0.30 0.32 0.36 0.40 0.43 0.45 0.50
250 0.58 0.73 0.81 0.87 0.93 1.05 1.16 1.25 1.31 1.45
260 0.63 0.79 0.88 0.94 1.00 1.13 1.26 1.35 1.41 1.57
270 0.68 0.85 0.95 1.02 1.08 1.22 1.35 1.46 1.52 1.69
280 0.73 0.91 1.02 1.09 1.17 1.31 1.46 1.57 1.64 1.82
290 0.78 0.98 1.09 1.17 1.25 1.41 1.56 1.68 1.76 1.95
300 0.84 1.05 1.17 1.25 1.34 1.51 1.67 1.80 1.88 2.09
310 0.89 1.12 1.25 1.34 1.43 1.61 1.79 1.92 2.01 2.23
320 0.95 1.19 1.33 1.43 1.52 1.71 1.90 2.05 2.14 2.38
330 1.01 1.26 1.42 1.52 1.62 1.82 2.02 2.18 2.28 2.53
340 1.07 1.34 1.50 1.61 1.72 1.93 2.15 2.31 2.42 2.68
350 1.14 1.42 1.59 1.71 1.82 2.05 2.28 2.45 2.56 2.85
360 1.20 1.51 1.69 1.81 1.93 2.17 2.41 2.59 2.71 3.01
370 1.27 1.59 1.78 1.91 2.03 2.29 2.54 2.73 2.86 3.18
380 1.34 1.68 1.88 2.01 2.15 2.41 2.68 2.88 3.02 3.35
390 1.41 1.77 1.98 2.12 2.26 2.54 2.83 3.04 3.18 3.53
400 1.49 1.86 2.08 2.23 2.38 2.68 2.97 3.20 3.34 3.72
410 1.56 1.95 2.19 2.34 2.50 2.81 3.12 3.36 3.51 3.90
420 1.64 2.05 2.29 2.46 2.62 2.95 3.28 3.52 3.69 4.10
430 1.72 2.15 2.40 2.58 2.75 3.09 3.44 3.69 3.86 4.29
440 1.80 2.25 2.52 2.70 2.88 3.24 3.60 3.87 4.05 4.50
450 1.88 2.35 2.63 2.82 3.01 3.39 3.76 4.04 4.23 4.70
460 1.97 2.46 2.75 2.95 3.15 3.54 3.93 4.23 4.42 4.91
470 2.05 2.57 2.87 3.08 3.28 3.69 4.10 4.41 4.62 5.13
480 2.14 2.68 3.00 3.21 3.42 3.85 4.28 4.60 4.82 5.35
490 2.23 2.79 3.12 3.35 3.57 4.02 4.46 4.80 5.02 5.58
500 2.32 2.90 3.25 3.48 3.72 4.18 4.65 4.99 5.23 5.81
510 2.42 3.02 3.38 3.62 3.87 4.35 4.83 5.20 5.44 6.04

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