The Airsoft Systems ASCU is easily one of the most intuitive Mosfet/ Fire mode converters on the market. Airsoft Systems took user feedback from the first version on the ASCU to improve and update it. The ASCU replaces the Mechanical switch and wiring of a standard AEG with an electronic style switch, much like the Systema PTW’s fire control system. This increases both the reliability trigger response of your AEG. The ASCU also allows the user to choose from 4 easily selectable fire modes such as burst, full auto, semi only and burst/full auto. The addition of the ASCU to any AEG allows the gun to meet its full potential, low quality wiring and mechanical trigger mechanisms plague most airsoft guns and drastically increase electrical resistance which slows down the trigger response and rate of fire. Mosfets are a great innovation for Airsoft and the ASCU is at the top of the heap, bring your AEG to its full potential with the ASCU!
Manufacturer: Airsoft Systems
Model: ASCU Gen. 3
Package Includes: ASCU, Wiring, Fire Control Unit, Selector Plate, Cut Off Lever
Increases Trigger Response
Realistic Cycle Function
User Programmable Firing Modes
Switch Fire Modes In Seconds
Drop In Installation
No Soldering Required
Increases Battery Life
Increases Rate Of Fire
Improves Gearbox Reliability
This product is designed for Rear-Wired guns but can be modified by experienced gunsmiths for front-wire setup.
A 1 year factory warranty is provided that no physical modification has been made to the product.
2013-04-11 18:13:11 S. REEVES verified buyer Product Information:
I recently bought the ASCU Version 3 Mosfet and installed it following the directions in the guide it came with.
My problem is every time I connect the battery I hear either one long beep or two short beeps from the motor then followed by the programing 1 beep, 2beep, 3 beeps and 4 beeps. After that I would pull the trigger and get one spin from the motor and then it stops followed by 2 beeps. That's all I get out of it!!!
Can any of you guys help me out with this problem ((( PLEASE )))
Great customer service!!!
They are trying to figure out the problem and will get back to me.
Easy instructions and fun to install.
Having problems trying to figure out how to get it to code. But once I get this thing working im sure its gonna kick butt and I will wright another review.
2013-04-07 11:50:37 G. SCOTT Product Information:
I bought this from a local dealer but cannot say enough good things about this unit. I have a new KWA SR10 and have used it about 4 weeks now. I have almost 10k rounds through it already. My trigger started getting sticky or notchy if you will. I only use lipo batteries and was using an 11.1v 2000 mah 15c battery. I had forgotten that airsoft guns DO NOT have a lipo cutoff for low voltage and ended up destroying a brand new battery because of that fact. So I switched to 7.4v. because they are much cheaper and if I ruined another one no big deal. Well, as I said before with the sticky or notchy trigger, I talked with my local Airsoft dealer and he informed me that the trigger contacts were probably burned. I brought the gun in and he was absolutely right! (I have the worst luck with airsoft guns). He had the ASCU in stock and for an additional 40.00 he would install it and give me an additional 1 year warranty. Once the work was done, and I shot my gun, that device transformed my gun into something extremely beautiful. The ROF before with the 7.4v lipo was 16 RPS, with the ASCU installed, same battery ROF increased to 19 RPS. Using the 11.1v lipo previous ROF was 23 RPS, with ASCU ROF is 27 RPS! The gearbox is so buttery smooth compared to before and best part is I never have to worry about compressing a spring again because this device automatically sets the piston spring in the unload position. I use the default mode of operation. Semi stays semi in all modes it is only the Auto mode that gets anything done. Default for auto is 3 round burst for a single trigger pull or hold trigger for full auto. Best thing ever in my opinion. Reliability is not going to be an issue as this has a built in low voltage lipo cut off and will auto detect whatever size lipo you install up to 12v! Amazing. I believe my gun actually shoots better simply by adding this mechanism. While I have not tried any of the other brands on the market, I will say this is expensive as an upgrade or even as a precautionary addition to save batteries, but I know it is money well spent. I will buy one again when I get my primary CQB weapon.
Increase Rate Of Fire
1 yr full warranty
simple install (even though I had my local dealer perform the work, I watched him do the job)
Adjustable firing modes with audible tones
will not fire if a low battery is installed and will beep an alert for low battery
positions piston spring in non-compressed state automatically
smooth trigger operation
some gearboxes might need a dremel tool for modification
Please Note: Please be respectful and do not use any profanity. Any questions regarding the removal of the orange tip will be deleted.
note on connector
On the connector there is a little note about how the connectors polarity is reversed. Do I need to cut the connector off and switch them? This is my first time doing anything with electrical stuff beside installing deans.
48 days ago
(I have this same question)
Staff Answer: All that would mean is that you'd have to install your motor flipped. Instead of positive terminal forward, it would be negative terminal forward. We'd recommend staying with the current polarity set up, as that was what the product was designed for.
47 days ago
1 answers 1 person asked
This product was added to our catalog on Wednesday 03 April, 2013.