This is an exact copy of the Tokyo Marui M4A1. In our opionion, up to this point, this is the highest quality airsoft AEG / MPEG to come out of China. JG continues to put out the highest quality products, setting it far ahead of many of the other manufactures in China. Keep an eye out for this model along with others by JG.

What is JG or GB or Echo1?
JG stands for Jing Gong, which is actually Chinese for Golden Bow; hence GB. Also, Echo 1 is the same as GB or JG, they are OEM Jing Gong airsoft AEG guns. All these different names for the same airsoft manufacturer is confusing. Hopefully, this has helped clairfy the confusion.

Hot Off the Production Line - this Brand New JG M4 A1 shoots at an amazing 360 FPS out of the box. It has a metal gear box with high quality construction. This package comes standard with an 8.4V 1100mAH battery and standard wall charger. This gun is a GREAT BUY! Solid construction, quality craftsmanship and super pricing make this the perfect package! Airsplat Highly Recommends this product!!

This weapon was intended to replace in service some M9 pistols, as well as some aged M3A1 submachine guns and some M16A2 rifles. New weapon was much more handy and comfortable to carry, than the long M16A2 rifle, so the US Special Operations Command (SOCOM) put its eye on the M4 as a possible universal weapon for all Special Operations community. For this purpose M4 was latter modified with the M16A3-style flat-top receiver with integral Picatinny-type accessory rail instead of the M16A2/M4-type integral carrying handle. The other change in the M4A1, when compared to M4, is that its trigger unit is modified to fire full-auto instead of the three shots bursts. Specially for the SOCOM M4A1s US Naval Surface Warfare Center developed a SOPMOD M4 kit, that consisted of the M4A1 carbine equipped with Rail Interface System (RIS) instead of the standard handguards. The kit also includes a variety of the add-on goodies, such as various sights (ACOG 4X telescopic, ACOG Reflex red-dot, detachable back-up open sights), laser pointers (visible and infra-red), detachable sound suppressor (silencer), modified M203 40mm grenade launcher (with shortened barrel and improved sights). The kit also included a detachable front grip and tactical light.