The photo above shows the hop-up unit sealed against the gearbox. The o-ring is between the hop-up knob and the version 2 gearbox. There is no contact between ...

I have determined that the method documented in this article is a bad idea. See the "Aftermath" section for details. After getting a Bravo Airsoft M4/M16 Metal ...

Battery is dead. Motor is burnt. Wires are bad. Gearbox is locked. This article provides a quick and simple method to reset your gearbox, ...

... hop-up. The lower receiver carries the gearbox, the rear shoulder stock, motor, and handgrip. To separate the receiver, tap out the receiver pin at the ...

Sep 11, 2013 · My friend mentioned to me that he's concerned with the plastic hop-up unit in his DBoys M4 CQB-R. In the past week, he has gotten some MilSim ...

Disassembling the gearbox, I found that the trigger post had broken off. Examining the trigger mechanism, I realized that the trigger post is molded as part of ...

Do you guys put lubricant on the bucking? Or do you guys leave it dry? This past weekend, I had some different experiences with lubricated bucking vs. no- ...

Jul 20, 2013 · ... gearbox against the M4 upper receiver. The only constraints are that the M4 upper receiver must be metal and the hop-up must be one-piece.

Nov 13, 2013 · - Hop-Up Bucking and Gearbox Nozzle: During ... Seal the cylinder head nozzle with your finger. ... Excerpt: Everyone claims the o-ring for airsoft ...