Idea for bolt catch functionality on a standard AEG.

[John_234]

One thing I always hated about AEGs is that the standard, readily available ones don't stop firing when they're empty. It's not particularly a big deal in terms of playing, but I just like realistic weapons. I couldn't play pistols forever. The Marui SOPMOD wasn't particularly attractive either, given it's proprietary magazines.

So I'd like to lay out an idea. It's mostly electrical and a tad complicated. I'd compare it to a mosfet hooked into the gearbox and body instead of the power supply.

The first idea would be to modify the feeding nozzle. I'd measure out how much clearance the magazine would give the feed tube, and extend the tube if necessary. Then, I'd drill a hole through both sides of the nozzle. On one side, there would be a laser or projector of some kind. The other would have a sensor. Then, two switches would be wired to the charging handle and the bolt catch. All this would be wired to a microprocessor that is hooked into the power supply and the trigger wiring.

Essentially, it's programmed so that if nothing blocks the beam for a certain period of time (say, one full second), it cuts off the power to the trigger, essentially locking up the weapon. The switches in the bolt release and charge handle would reset the system, making it recheck the feed tube. In effect, the gun stops firing when out of BBs, and resumes firing when either switch is hit and BBs are present in the feed tube. I'd have an issue doing tactical reloads, but I think it'd be a relatively small pain.

The main issue is finding the space for the components and setting them up so they won't pull themselves apart if the weapon is stripped.

So, I'd like a dissection of this idea. Is it too complex? Is it not worth the effort?

[Cap n pickles]

There is already a company that makes mosfets that limit the gun to fire a set number of rounds before it stops firing, and it won't be able to fire again until the magazine is release, reinserted, and the bolt catch is pressed.

They also make a mosfet that simulates random jams as well.

The most attractive thing about the Mauri SOPMOD is by using those proprietary magazines, it was able to feed ALL the BBs in the mag, and lock the gun when the magazine emptied.

Get one of the first ones, and some 60RND mags, and you're good to go.

[Pharaoh 7]

You could also get one of the WE GBB SCARs or M4s they catch when the magazine is empty.

[league 4]

There are adapters that let you use standard mags in TM SOPMOD's.

http://www.wgcshop.com/wgc2008/main/pro ... atid=&cat=

[k3gn3123512]

I wish all AEG's would adhere to that kind of realism such as the SOPMOD. I feel that noobs would learn to properly use their gun if it jammed up more often and did such things.

[Jewish Ninja]

There are adapters that let you use standard mags in TM SOPMOD's.

http://www.wgcshop.com/wgc2008/main/pro ... atid=&cat=

Using that means the bolt catch won't work.

[k3gn3123512]

I just saw the SOPMOD video...

I want one. Its sexy. (That's the first time I have ever said that about a TM). It actually has a metal body. Now if the price wasn't $500+.

[John_234]

There is already a company that makes mosfets that limit the gun to fire a set number of rounds before it stops firing, and it won't be able to fire again until the magazine is release, reinserted, and the bolt catch is pressed.

They also make a mosfet that simulates random jams as well.

The most attractive thing about the Mauri SOPMOD is by using those proprietary magazines, it was able to feed ALL the BBs in the mag, and lock the gun when the magazine emptied.

That's interesting, but I can see problems with swapping mags before you're empty. That also means you can fire without rounds loaded in the gun, assuming you remove and insert the mag. Seems rather flimsy, IMHO.

I wonder if it's possible to detect dry firing noise and differentiate it?

Indeed. The systema had similar things going for it initially. I'd just like a semi realistic option without losing the ability to share mags with the other guys on my team.

So what do you guys think of the idea above, though, instead of just posing alternatives?

[Cap n pickles]

There is already a company that makes mosfets that limit the gun to fire a set number of rounds before it stops firing, and it won't be able to fire again until the magazine is release, reinserted, and the bolt catch is pressed.

They also make a mosfet that simulates random jams as well.

The most attractive thing about the Mauri SOPMOD is by using those proprietary magazines, it was able to feed ALL the BBs in the mag, and lock the gun when the magazine emptied.

That's interesting, but I can see problems with swapping mags before you're empty. That also means you can fire without rounds loaded in the gun, assuming you remove and insert the mag. Seems rather flimsy, IMHO.

I wonder if it's possible to detect dry firing noise and differentiate it?

Indeed. The systema had similar things going for it initially. I'd just like a semi realistic option without losing the ability to share mags with the other guys on my team.

So what do you guys think of the idea above, though, instead of just posing alternatives?

It will stop after one dry fire (to simulate the click of no round in a chamber)

You have to pull out the mag and re insert it.

It is basicly what you are asking for, and they are around 100$ i think. But good luck getting one.

[John_234]

Then you're contradicting what Nasty said. Nasty said that the mosfet counts your rounds, meaning it doesn't really matter if it's loaded or not, but you're saying that they fire until a dry shot is heard, meaning it doesn't count rounds and works off of sound. Which is it?

[Mini-Marine]

http://www.awsairsoft.com/scorpion

This thing uses a hop up tracer unit to determine when you run dry and locks the motor

It won't fire again till you hit the bolt release.

[weasle8877]

http://www.awsairsoft.com/scorpion

This thing uses a hop up tracer unit to determine when you run dry and locks the motor

It won't fire again till you hit the bolt release.

Holy crap, that thing is the greatest MOSFET in the world.

[John_234]

http://www.awsairsoft.com/scorpion

This thing uses a hop up tracer unit to determine when you run dry and locks the motor

It won't fire again till you hit the bolt release.

Uh huh, so pretty much the same idea? Figured someone had the idea first. To clarify, that kit will work on weapons without bolt releases as well, right?

[weasle8877]

Looks like they have it for the AK47, (no bolt catch) so I'd say yes.

[shogun]

ASONW is currently designing and testing a Mosfet unit that can do 3 round burst and simulated open bolt functions(in addition to many other things), when the latest test board comes out i will be testing the open bolt function, it will stop firing after 30 rounds and after having removed then reinserted a magazine and hitting the bolt stop will reset the 30 rounds, so mag changes before being empty wont be an issue. some small modifications to your mags may be required. the final method of implementation is rather dependant upon testing.