Solving the Echo1 M240 Bravo Trigger Switch Contact Issue

As some of you Echo1 M240 Bravo owners may already know, there is a bit of a design flaw with the position of the trigger switch inside the gun.

The wires that connect to the switch's contact plates stick out a bit too in the back, making it difficult to install the stock after inserting a battery or putting the gun away for storage or transportation in a case.  

When installing the stock onto the back of the gun's receiver, the bottom portion of the stock would catch on the wires attached to the thin, metal contact plates of the trigger switch, causing the plates to bend back & forth, which weakens the metal each time it is bent.  Eventually, I broke one of the plates off and had to spring for a whole new trigger switch.  
So I installed the new trigger switch, but the problem was not resolved, so I knew it was only a matter of time before I would be replacing it again if I didn't figure something out.  
First, I thought about bending the wire terminals into more of a 90-degree angle to try and get them out of the way, but the jackets used by the manufacturer were a bit too thick to allow them to bend completely out of the way and I wasn't sure that replacing them with smaller shrink tubing was going to do a whole lot more good either.
 So I took a more drastic route that worked marvelously.
I cut that SOB.  I cut it hard...with a Dremel.

 I noticed, upon initial examination of the stock that there was quite a bit of unnecessary material at the exact point where the stock was snagging on the wire terminals.  I, therefore, removed most of the material, leaving enough to keep the stock's spring-loaded latch in place.  When I tried installing the stock with the excess material removed, it went on like butter, as they say.  Threat neutralized.

I will add that the material I removed is part of a metal adapter on the stock, so while I suppose you could use a hand file set if you didn't have a rotary tool like a Dremel, it will likely take you quite a bit longer to complete this task.  Fair warning.
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Tuesday, February 28, 2012

Airsoft Trigger Switch vs. LiPo Battery

Ever wondered what the inside of those Airsoft trigger switches in many of our beloved Airsoft machine guns looks like?

Yea, me neither, until I had to pull one apart to see what it's freakin' problem was.

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You might recall from my A&K M60VN Review that I was having some trouble inside the gun, likely because I was using an 11.1V Li-Po battery pack that had too high of a C-Rating (rate of discharge).

Here is the link to that series of blogs to catch you up to speed. 

Check out the rest of the Airsoft trigger switch photos after the jump...