EKO Custom M16A4 RIS, 140m/s, AirsoftGuns, BY-055, BI-5581M

EKO Custom M16A4 RIS, 140m/s, AirsoftGuns, BY-055, BI-5581M. Professionally upgraded version EKO Custom electric airsoft gun M16A4 RIS [BY-055/BI-5581M] with muzzle velocity up to 140 m/s. This is not a standard serial production in China or Taiwan, where it is not possible for weapons to be provided much time and care. Upgrade was provided by our company, which has more than ten years of experience and plenty of satisfied customers.

As the name suggests, it is a more economical version of the popular Custom weapons. It offers similar performance at a better price. In this variant rebarreled original motor and steel gears with the basic gear ratio. Furthermore, leaving the original placed brass cylinder and the base Spring guides with the bearing spring. Despite EKO version includes a large number of high-quality parts that are not in this price range can withstand routine and other related upgrades.

This full metal gun is supplied from the latest edition of which has recently processed metal body with functional dust cover. The latest model M16 with metal RIS handguard, long heavy barrel and a removable transport handle, on which it is possible to attach different scopes and red dots. Fixed stock storage battery is certainly an advantage.

Gun was fitted with parts from SHS, which has become a world leader in the sector AEG upgrades. The following components were used..

Ventilation from the SHS:
CNC metal piston head with the bearing
SHS metal cylinder head M4
Aluminum nozzle M16/M4 - 21.5 mm

Stress parts from SHS:
Precise piston with a steel teeth

Performance parts from the SHS:
Spring M130

And the other:
Metal Hop-Up set M16/M4
Gilded T-Dean connector
Universal MOS FET switch kit - Type Standard

Basic metal reinforced gearbox was modified and metal chamber of gun was propped by rubber o-rings, which is intended to prevent premature rupture of the gearbox. This problem is frequent for homemade upgrade and upgraded weapons mass-produced in China or Taiwan and with strong spring. The weapon is equipped with a spring M130 and thanks to a quality cylinder set and good coaxiality performance of up to 140 m/s is achieved. The weapon is luxuriously equipped with low resistance wiring and silicon MOS FET switch which is absolutely necessary with strong springs but often manufacturers and retailers underestimate. The package does not include charger or battery, we recommend to order types. See recommended accessories tab. The pack is supplied with tactical sling + handles, cleaning rod, Wind Up Hi-cap Magazine 300rds, tactical grip, 2pc covers on RIS rails and box AN/PEQ 2 (imitation laser sight).

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