[adas1223]

its working!

Trying to get back into airsoft, took a 5 year break. Like the title says, I have an idea for an AEG AK build with functioning charging bolt, mag empty, magazine out function. Think KWA AKR ERG. The reason i didnt go that route is that:
i like the ak 74u platform, very compact. akr is proprietary. i like real wood and stamped steel. i like to tinker/fabricate stuff. use of my own EFC/MOSFET for trigger response, not so much ROF. So far i have preordered a CM045A* coming in next month. Gate Warfet1.1 EFC with control board. 3AH 20A lion battery cells. Magnetic reed switches and 6mm neodymium magnets for switch activators.

I plan to glue magnets to the magazine and follower, then glue the reed switches to the gun itself so it will disconnect the trigger when the mag is either out, or empty/low BB's. someone on youtube has a similar setup which i borrowed the idea from.

Im custom making a 16v L-ION 3ah battery pack with LG HG2 cells which the warfet1.1 should handle fine. My aim is for realistic gun manipulation and trigger response. the gate warfet 1.1 has a pretty cool precocking feature which should lower FPS in the long run (keeps spring compressed) and create a hair trigger without the fuss of a dsg build. scratch this- you dont need precocking with a 16v battery

*Some questions im hoping you guys can help me out with is the function of the bolt charging feature once a new magazine is inserted. Im not sure if I need a relay or if this can easily be done mechanically.

Ill keep this build updated with pictures when the gun itself comes in. If you see any things i overlooked please critique my ideas.

 

[adas1223]

Welcome back to the Forum adas1223!

Are you sure that you want to go with the CM-035A instead of the CM-045A?

thanks man. rechecked my order lol. it is infact AEG-CM045A! thanks for the info, i didnt realize there was that many differences. good thing i asked.

aestheics wise, i plan to design some bits in my 3d printer. maybe an extended follower so no bbs get wasted similar to the KWA.

Any recommendations on an easily dissasembled AK mid-cap? Can KWA akr mags work on this gun? it would be great if they did

if no one knows im willing to drop the $ on a mag i can tear into and mod XD

 

[adas1223]

pencil for scale. the 6mm neodymium magnets with the micro reed switches. magnets need to get within half inch to activate the switch. very cool audible click once activated. this of course will disconnect/reconnect the trigger signal wire.

of course the warfet 1.1 waiting for the gun to arrive XD

 

[adas1223]

CM045a came in. i was able to custom make a 20a 12.3v max 3000mah batterypack. i could fit 3AH of 16v goodness but the trigger response is god like even without the mosfet. ordering a flat trigger because the stock ak has such a long pull. to get quick triple taps i need to pull the trigger at the very end tip.

I did have to grind the 2 rivets under the cover and sides of the front block to fit the battery. no biggie.

im downgrading the spring to an m100 too once i crack it open. shoots very well so far! very pleased!

 

[adas1223]

Chows correct. Pre-ordered it when it was on sale for $116

 

[adas1223]

Here it is so far. 16V 3AH goodness with warfet chip fit PERFECTLY! i dont really need the pre-cocking feature as the response with 16v is more than enough. i like the Burst feature though!

Im Using the KWA 60round AKR mags which feed all bb's. I glued a magnet to the cutoff. Also used a rubber nub to keep any bb's from falling out. works like a charm!!!

I can't believe i got the Magazine empty* feature working. Gun cuts-off when there is 1 bb left. the gun will still fire without magazine though. the mag out feature will be my next project. should be more straight forward.

more to come!!

PS: i also 3d printed a "stormwerkz sight rail" which i designed so i can mount my micro red dot or t1.

PPS: flat trigger and downgraded m100 already inside

 

[adas1223]

anybody know if a switch like this exists or similar. preferably micro sized. Im a noob at circuitry. I really want a functioning bolt charge.

edit: after studying this circuit it wont work. the trigger signal was suppose to be the power. i just realized the trigger is a broken signal already lol. you cant break something already broken SMH! lol... back to the drawing board

PS: the build is going great. ill post up pics of the magazine mods i had to do for empty mag simulation. im swapping over the 3rd burst for a 900rpm automatic setting. more realistic and the rate of fire of a 16v is too much

 

[adas1223]

Updates: rethreaded the barrel to 1/2x28 to fit my .223 muzzle device. (also shorted the barrel and re-crowned) installed a red dot rail. Modified all 3 of the KWA magazines to cut off when empty. even upside down! just added a little 'spring'. ill upload a shooting video tomorrow. have to charge the POV cam

 

[adas1223]

Update: ordered 3 more KWA erg magazines. retrofitted a trigger micro switch and hair trigger mod. very glock like audible and tactile short reset. slowed down the rate of fire on full auto by 50%

 

[adas1223]

Some updates

chronoing .20 @ 320fps with my m100. .30g bbs @ 265fps. VERY cqb legal.

Ordered shs 12:1 gears. my stock spur gear lost a tooth. still works but cant say no to an upgrade.

Found a new reed switch sensor made in india. i can most likely get my bolt to charge the next round with this one! can also achieve mag out cut off, AND still use high caps if i need to *crosses fingers* I'll sell my idea to an airsoft company first dibs

Ordered a magpul AK grip. hopefully i can mod it to fit the motor! this project keeps going!

also, drilled out the rivets to the scope mount to remove. that chunk of pot metal weights a ton. so did the stock steel flash hider. filling in the rivet holes with plain alu pop rivets.

 

[adas1223]

It's been a long time since I've seen a thread with this much cool stuff in it. I may get back into AEG's and try some of this stuff.

yeah dude!

UPDATE: new sensors incoming from (Reed Relays and Electronics India Limited). these guys are awesome to hook me up with free stuff gotta keep this WIP thread full of information if i decide to build another gun like this. Ill post more indepth pictures of the modifications (especially the micro switch trigger) once i tear apart the GB again.

PS: I have a gas shell ejecting shotgun coming in (cam870 mkII) i couldnt pass up the deal. I have 3d printed shells and 3d rifled slugs waiting to get shot!!

 

[adas1223]

new sensors here! same size as previous. also, fitting a real steel AK K2 grip in OD. more vertical than a stock v3 grip

 

[adas1223]

that was my orignial plan! but since the KWA had a cut off nub which rises too, i couldve went either route.

but that functionality already exists on the gun. when its out of ammo and mag is in, it cannot fire. the magnet is near the reed switch.

The element i want is to have the gun not fire even if the mag is full or even when there is no magazine. you'd be forced to charge the bolt to reactivate. this is done with my new sensor being 'Bi-polar' latching type.

 

[adas1223]

yes their line is pretty awesome. their v2.5 and v3 aegs have the cut off feature.

pics of the AK magazine cut off and the cut-down modded one:

their magazines are super high quality and their feed all mags work with any V3 gearbox (not sure about their v2's). If you do the rubber hopup nub mod (check post #10) BB's never drop out of the magwell and feed everything (edit: leaves one round in hop up. full auto generates enough suction to fire it down the barrel careful)

 

[adas1223]

Ares motor and grip came in! Definitely improves the feel of an AK aeg. another step to a realistic AK

(dont worry about the screws, it came with shorter ones)

PS: I Still have to try out the new reed switch to make the bolt functional.

 

[adas1223]

These pics show the microswitch and sled retro-fitting. used large gauge? copper wire to increase reach. Then sacrificed old copper contact with epoxy to block off trigger travel. only mod you cannot see yet is a shaved selector.

 

[adas1223]

FINISHED!

soldered in the new (bi-polar magnetic latching reed) switch. it was hard sourcing something that specific but someone in india makes it!

Same exact area i tucked the regular reed switch. Then I drilled and epoxied a 6mm neo magnet to the bolt catch (see pic#2)

Other updates: cerakoted rivets and trigger sniper grey. removed stock for now.

 

[adas1223]

Dont mind the heavy breathing. stuck the gopro in my mouth

*you need to pull the bolt full travel to reset the switch

 

[adas1223]

Quick update story:

had some feeding issues with full auto on SHS 12:1 gearset and 16v 20a lipo. bought an SHS sector delayer:

chrono'd the gun and fps dropped >140 FPS! (from 363>213 and HUGE fps variance!)

if i shot the gun upside down, the 2 bb's in the HU would shoot in the air. major air leak!

The sector delayer was on backwards! lol... so i flip it! now im chrono'ing 320FPS! still large variance. wtf

put tissue paper near the HU and there is still an air leak (smaller)... tore the GB apart and check the motions. here's the fix, grind this part down:

Now im Chrono'ing 386 with - +1fps inconsistency! m100 spring to boot. i cant win. too hot, my goal was 350 with .2g bb's for this smg.

Another mod I did when the gun was apart is a HUTU (hop up tracer unit). drill 2 holes in HU (top and side), buy dirt cheap 3mm UV led's and shorten them. wire to 9v Battery = WIN!

i have to run the 9v battery externally because they dont fit in the handguard with my 4S lipo. I could solder a 11.1v pack which will give me room for a 9v in the front.

i might throw up a video of the tracers soon!

 

[adas1223]

Very impressive build, adas1223.

Thanks! i keep my eye on your builds too. great info there

snip.. I have too many projects sitting on back burner
..snip

gtfo thats crazy! Check my signature, i just picked up a jg bar10. pure virgin untouched. chronoing at 373fps lol.. never had a sniper before so this is an interesting build.

Im also going to remote propane tap my G&P m4 with a high-cap magzine-frankenstien'd on my prowin green gas magazine. 3D print a 'surefire' type reservoir. much better looking imo than whats now available on EVIKE.

I also designed a HERA front grip for the AK74U front end too.

these 5 builds are keeping me more than busy in my shop, i cant play with my other toys lmao