Airsoft Tech Talk

06/18/2026

Spiker with a drum!

An old, early serial number Real Sword Type 56 finished up for a friend. I spent some time rebluing it to repair the rough ultra-coarse steel wool "weathering" job that was done to it before, so the battle wear will look a lot more natural now. Given more time, I would refinish the wood back to the original color too, but maybe that'd be something for later. These have a pretty unique firing signature compared to other AK's, which I think has to do with the truncated gearbox and the opening in the back for the piston pass through.

Specs:

- Real Sword Type 56
- LCT drum magazine
- Lambda Five 6.05 stainless steel barrel
- Real Sword hopup chamber
- Gen. 3 TruHop
- 3M squishy nub
- Real Sword air nozzle
- Real Sword cylinder head
- Real Sword cylinder (polished)
- Guarder stainless piston head
- CYMA FMR piston (modded for RS box)
- Guarder SP110 spring
- Real Sword tappet plate
- Chonky cat heavy breathing intensifies tappet spring
- Rocket 18.65:1 gears
- Lonex delayer
- FLT 7mm bushings
- Real Sword AR latch
- Perun V3 ETU
- Solink SX-1 brushless motor

1.42J w/.32g's @ 23 RPS

06/17/2026

Bit of a challenging build, but one of the coolest SCAR's I've done so far. I really might have to keep it 😅

It may not look like it, but the PTS grip has been carefully shortened and modified to work with the way the gearboxes mount up in these. I also added a short spring to the front of the charging handle guide rod to keep the mock bolt fully seated forward. The rear section of the guide rod that normally indexes into the factory stock had to be shortened up to allow the Deans to pass through. I wound up drilling and tapping it for a retainer screw to keep the spring guide from shooting through the buffer tube when the charging handle was operated.

Specs:

- VFC SCAR L
- EMG x KAC QDC suppressor w/E-Shooter Flare tracer
- KWA shorty barrel extension
- PTS MREX 2.2 MLOK rail
- Steel QD sling socket
- Magpul handstop
- Airsoft Artisan M4 stock adapter
- Magpul CTR stock
- PTS EPG motor grip (modded)
- Lambda Five 6.05 275mm stainless steel barrel
- MAXX SV SCAR CNC chamber
- 4UAD Quantum bucking
- Retro Arms CNC Ver. 2 gearbox (shimmed for optimal nozzle alignment)
- MAXX 22.50mm nozzle (modded per previous post)
- Lonex double O-ring CNC cylinder head
- ZCI stainless cylinder
- Lonex POM piston head
- CYMA FMR piston
- Guarder SP120 spring
- Guarder tappet plate (modded)
- Fancy schmancy tappet spring
- Rocket 18.65:1 gears, short-stroked 3x teeth
- Retro Arms delayer (modded)
- Lonex AR latch (removed, since unidirectional bearing and old habits die hard lol)
- FLT 8mm bushings
- Gate TITAN II Bluetooth
- KWA flat trigger
- MAXX lightweight trigger spring
- Warhead Vanguard 40K brushless motor

Hits 30 RPS w/11.1v @ 1.49J w/.32g's 🔥

06/16/2026

My first time doing one of these AGM STG-44's! For the most part these are basically Ver. 2's internally and not that hard to work on. The G&G G980 K98 scope is near functionally useless (she's foggy, and it's like peeping through a 1/2" pipe with 1.5x magnification), but it's kinda interesting lol. These have a really funky motor cage, so I had to make some little plastic spacers for the motor height because the dual set screws that AGM uses to set height were already denting and wearing through the end cap on the motor over the course of a few mags. I might try RIT dying the muzzle nut today because orange things are bad.

Specs:

- AGM STG-44
- 3D metal STG optics mount, drilled and tapped for a retainer screw
- Lambda Five 6.05 363mm barrel
- Gen. 3 TruHop
- Older MAXX ME CNC rotary hopup chamber (donated because the stock chamber sucks hairy ones)
- 3D hopup chamber adapter, courtesy
- MAXX 20.50mm nozzle
- Lonex CNC double O-ring cylinder head
- 70D AirPad
- Lonex POM piston head
- ZCI stainless cylinder
- CYMA FMR piston
- ASG M115 spring (trimmed a coil and reprofiled)
- Rocket 18.65:1 gears
- FLT 8mm bushings
- Retro Arms delayer
- Guarder tappet plate
- Lord Humongous tappet spring
- Perun V2 Pro ETU
- Perun V2 Clicker
- Stock trigger
- MAXX 50% reduced weight trigger spring
- T238 brushless motor

24 RPS @ 1.5J exact with .32g's.

06/12/2026

MAXX has poured a lot of effort into updating the M4 chambers, but literally spared nothing for the SCAR chambers. On all current production VFC SCAR's, I've seen that these chambers do not line up at all with the new feed tube design. In truth, VFC should also update the SCAR chamber from the clear polycarb cheese they've been using forever now, but given how long it took just to update the piston from the fragile blue polycarb version.... that'll probably happen in 2077. 🙃

For the MAXX, what I've had to do is add some tiny shims to the hopup wings to move the chamber forward so the feed tube aligns with the bottom of the chamber. In the case of the SCAR, the set screws on the outer barrel chamber block are what holds the position of the chamber, and these screw in behind the wings. Without these shims in place, the chamber sits too far back and BBs will not feed upwards due to hitting the flat metal ledge of the chamber. You cannot modify the chamber by milling away material either because this would then expose the bottom of the bucking.

Of course, this means a longer air nozzle is necessary too. In this case, a 22.25mm is used, modified slightly for length and reprofiled.

Because the MAXX SCAR chamber also has a little U-shaped notch just below the bucking lips, this can sometimes create an issue with BB's rolling the bucking lips and creating a pinch jam; especially on high ROF builds. So you will need to select a bucking that has shorter lips or consider slightly sanding the bucking lips shorter. Additionally, a harder bucking is going to be more ideal for the high ROF applications because it will have stronger lip tension. Something like the Airsoft Mutation LC or 4UAD Quantum works well.

06/10/2026

06/06/2026

Aaaaand she's finished ❤

The LCT jank was strong with this one. You of course had the usual oversized axles that fudged the bearings just getting them tapped out of there. And I'm just gonna say it: the new style rotary chambers are hot f*cking trash. Just as soon as I thought I had it nailed down and shooting beautifully, it would inexplicably have a sandy vajayjay. I spent far too many hours futzing with it before I threw it in the trash can and dropped in the old version LCT slider chamber. And what do you know if that didn't get it running perfectly :P

For some reason LCT doesn't seem to be shipping anything with the muzzle plunger and spring anymore either? So I had to supply that.

Specs:

- LCT RPK
- LCT magwell spacer
- CYMA 180 round midcaps
- Lambda Five 363mm stainless barrel (pushed the barrel support sleeve down to meet up with it)
- Gen. 3 TruHop
- 4UAD orange concave nub
- LCT slider chamber
- LCT air nozzle (went back to this)
- LCT tappet plate
- McMaster über boingy boingy spring
- Lonex double O-ring CNC cylinder head
- LCT cylinder
- LCT CNC piston head
- 70D Viton O-rings
- CYMA FMR piston (had to ditch the Kratos due to rack clearance issues)
- Guarder SP110 spring
- Rocket 18:1's
- Retro Arms modded delayer chip (also changed from the photo)
- Solink SX-1 brushless motor
- Gate ASTER II Bluetooth (rear-wired)
- Modded trigger for shorter throw
- Trying out some new Airsoft Mutation shims, plus a couple of T238's because I ran out of their 0.1mm.

06/05/2026

Installing this ONE screw on the left side will tank the velocity from 315 FPS w/.32g’s down to 178 FPS. 🤣

06/02/2026

Where the previous NGRS build was smooth as glass, this one has been a total unapologetic PITA.

Most notably, the PandoRA NGRS gears will not clear the piston rack when the piston is at full retraction. I've tried it with both the FPS Softair (which incidentally, doesn't even move at all freely on the piston rails 😅) and even Retro Arms own NGRS piston. Normally I would run Prommy gears, which are well proven, but these were supplied by the customer and given the near total lack of user feedback on RA's NGRS gears in the groups and the internet in general, I elected to be the guinea pig and see if they were decent.

Also, the RA spring guide remains drilled off center too lol. 🙃

05/20/2026

"Welcome to the party, pal!"