Guarder Spring Guide with Bearing for M249 AEG EBR Fully compatible with aftermarket airsoft

Fully compatible with aftermarket airsoft guns taking M4 magazine

Custom Metal Body

With Short Length Outer barrel

000 hours of operation on one CR2032 battery

5-10x40mm  -M14 magazine (160rds) (GP472)  -M14 7mm Bearing Gearbox  Recommend to use 7

Guarder Spring Guide with Bearing for M249 AEG EBR Fully compatible with aftermarket airsoftTo build a tight & durable gearbox This reinforced Spring Guide replace the original Stock Spring Guide of Airsoft AEG This spring guide with Ball Bearing is designed to minimize the load for the motor caused by the spring tension Especially important for upgraded AEG to install this It also makes spring effectively spring back Backstop is specially equipped with NINE Ball Bearing to prevent Spring Tension build up during Full Auto Shooting Mode. It