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AEG Power Upgrade - Install M120 Spring, Bushings, Shimming, & Basic Tuning

1 Customer Review

by Michael L. on 02/24/2015
"I bought this upgrade with an Echo 1 AK700 and I am very happy with the service I received and performance I am getting from this gun. Firstly, the work was done three days after placing my order....much faster than I expected. Secondly, the gearbox runs very smoothly so the shim job was outstanding. Thirdly, with the M120 spring I chrono'd the gun at 425 fps with 0.25 gram BBs. Thanks, Evike.