CA057M M4 ECR5 Enhanced Combat Rifle Full Metal AEG
Internally, the gun has a 9mm bearing gearbox, wire cut steel 21:1 ratio gears, inline mosfet protected trigger contacts, stainless steel bore up cylinder, aluminum bore-up cylinder head, metal spring guide with bearing, 6.03mm tightbore barrel, silver low resistance trigger wiring, and a quick change spring system. The wiring utilizes a low heat deans plug and comes with an adapter for tamiya connector batteries. This gun is lipo-ready right out of the box. It will shoot 375-400 fps using 0.20g BBs and 800-900 rpm using a 9.6V battery. The quick change spring system allows for fast and easy spring changes without having to go into the gearbox.
90 day warranty.
|Overall Length||805mm-890mm (Adjustable Stock)|
|Inner Barrel Length||363mm|
|Inner Barrel Diameter||6.03mm|
|Piston Material||Heat Treated Polymer|
|Spring Guide||Metal Spring Guide with Bearing|
|Cylinder Head||Aluminum Bore-Up|
|Gearbox||9mm Bearing Metal Gearbox with Quick Change Spring System|
|Gearset||Wire Cut, Steel 21:1 gear ratio|
|Trigger||High Heat Tolerant with Inline Mosfet|
|Rate of Fire||800-900 rpm with 9.6V battery|
|Velocity||375-400 fps with 0.20g BBs|
Following the adoption of the M16 rifle, carbine variants were also adopted for close quarters operations. The CAR-15 family of weapons served through the Vietnam War. However, these carbines had design issues, as "the barrel length was halved" to 10 inches which "upset the ballistics", reducing its range and accuracy and "led to considerable muzzle flash and blast, so that a large flash suppressor had to be fitted". "Nevertheless, as a short-range weapon it is quite adequate and thus, (despite) its caliber, (the XM177 "Commando") is classed as a submachine gun." In 1988, Colt began work on a new carbine design called the XM4 combining the best features of the Colt Commando and M16A2 rifles.
The XM4 was given a longer 14.5-inch barrel with the M16A2's 1:7 inch rifle twist, to use the heavier 62-grain M855 rounds. The extended barrel improved the XM4's ballistics, reduced muzzle blast and gave the XM4 the ability to mount a bayonet and the M203 grenade launcher. The XM4 was also given the M16A2's improved rear sight and cartridge deflector, as well as other minor refinements. In 1994, the U.S. military officially accepted the XM4 into service as the M4 carbine to replace M16A2s in certain roles. The M4 carbine has also replaced most submachine guns and selected handguns in U.S. military service, as it fires more effective rifle ammunition that offers superior stopping power and is better able to penetrate modern body armor.
The United States Marine Corps has ordered its officers (up to the rank of Lieutenant Colonel) and staff non-commissioned officers to carry the M4 carbine instead of the M9 handgun. This is in keeping with the Marine Corps doctrine, "Every Marine a rifleman." The Marine Corps, however, chose the full-sized M16A4 over the M4 as its standard infantry rifle. United States Navy corpsmen E5 and below will also be issued M4s instead of the M9. While ordinary riflemen in the Marine Corps are armed with M16A4s, M4s are fielded by troops in positions where a full-length rifle would be too bulky, including vehicle operators and fireteam and squad leaders. As of 2013, the U.S. Marine Corps has 80,000 M4 carbines in their inventory. However, by July 2015 major Marine Corps commands were endorsing switching to the M4 over the M16A4 as the standard infantry rifle, just as the Army had done. This is because of the carbine's lighter weight, compact length, and addressing modern combat situations that mostly happen within close quarters; if a squad needs to engage at longer ranges, the M27 IAR can be used as a designated marksman rifle. Approval of the change could come in "weeks or months" and move the M16 to support personnel, while armories already have the 17,000 M4s in the inventory needed to outfit all infantrymen who need one.