Thursday, 5 January 2017

Ratashaka shorties: SHS 18:1 steel gears

These SHS newest generation CNC finished steel gears are great bang for your buck! I have been using these in wide range of builds since they released first generation in 2009-2010?

They had some quality issues in Gen. 2 and 3 but these newest ones are like gen. 4.

This Gear Set has a ratio of 18.72:1 and common naming is 18:1 stock ratio gears. Gearset speed is at the same speed as most stock gears, so it gives you a same performance as most stock gearsets.

Add an 9 teeth bevel to this set and you get nice set of 20:1 gears!

These gears are great tuneup for performance buck and base for DSG and Torque builds. They are really cheap and I can fully recommend. I have had these in M170 DSG and M150 SSG guns they have been holding nicely.

These are still ACM gears and sometimes you can win ACM lottery.

I found these cheaply from Airsoft Peak (Shop that I mostly use to get my ACM parts)

SHS Torque Up High Speed Flat Gear Set 18:1 for Gearbox V2/3

Bevel Gear

MIM Machined with black oxide coating and filled shaft. Standard 10-teeth design

Step Gear 

 Sector and Step gears are fully CNC machined so reability goes sky high!

Sector Gear, remember to tighten and locktite those small screws!

Upgrade Parts

Friday, 25 November 2016

Project RPK almost finished and moved to a new city

Long time no see!

I have had a longtime project to build most practical LMG for bigger mil-sim games. So naturally the RPK gives me all what I need. Its just a "big AK"

Bought this used for 50 euros. It had broken stock and internals.

Base gun is Cyma 052S with polymer furniture. I will remove the bi-pods and add an rail-system (probably the LCT Keymod one) with gripod.

Some tinkering and fixing and now its almost ready! 

Camo pattern is Finnish M05 Autumn/Winter "Frozen pattern" (or something like that)


  1. Retro Arms V2 gearbox
    1. 8mm bearings
    2. SHS 200% torque gears
    3. Random Cylinder parts (needs to be chanced to lonex)
    4. ASCU3 gen.3+
    5. Ares 15t piston, 
    6. Lonex POM PH
  2. Old JG blue motor (this needs to be recoiled to something faster)
  3. ZCI Lapped inner barrel with EIR hop

    Whats your favorite LMG?

I also got a new job and moved to a new city so there hasnt been happening too much in my airsoft projects.

But something new is coming all the time!

Tuesday, 20 September 2016

Ebb M4 project goings

Some problems finding a new piston for my next gen M4. Stock one was stripped so I tried to find alternative from SHS.

I have lots of good experience from SHS parts from AEG side so I gived SHS next gen a try

Well it lasted about 200 shots and rack tore itself out. I had even epoxied the rack and corrected angle of engagement.

Spring was around m130

Time to order Prometheus piston

Friday, 3 June 2016

BTC Spectre for Tokyo Marui Next Gen Gearbox quickie

BTC Spectre SneakPeak

Just got some goodies from overseas! Managed to grab one straight from Blacktalon Customs!

Will be installing this next weekend and hope to do some skirmishing next Sunday in Local Pirkanmaasoft games!

Not sure yet should I rewire my unit to front or keep it as it is. Yay or nay?

You can get yours from Blacktalon Customs or some distributor. They are in huge demand so be prepared to wait long time! I got mine by adding myself to notification list and ordered one minute after I got my notice!

From BTC Homepage:

Advanced Technology
Can handle power surges up to 9000 watts and even run on car batteries!
Fully computerized and driven by a high speed PIC18F14K22 microprocessor.
Multiple internal layers of heavy copper traces for greater current capacity.
Short circuit detection and voltage spike suppression circuits to protect the controller.
Smart thermal management allows the controller to remain cool under sustained firing.

MOSFET Trigger
Eliminates damaging electrical arcing of the trigger switch contacts.
Lower resistance compared to mechanical switching, increasing motor current.
Driven by dual IRF671812PBF, a compact yet powerful next-gen MOSFET!

Dynamic Braking
Eliminates the motor spin-down time to prevent the piston from over-traveling.
Assists in keeping the piston properly reset to reduce stress on the gearbox.
Prevents double firing on semi-fire in extremely high RoF setups.
Also driven by dual IRF671812PBF MOSFETs!

Cycle Completion
Gearbox always completes the last cycle regardless of when the trigger is released.
Assists in keeping the piston properly reset to reduce stress on the gearbox.
The motor will always have the smoothest and most consistent startup.
Allows the anti-reversal latch to be removed.

Fully Configurable Fire Select
Both fire select positions can be individually configured, for a total of 64 possible configurations.
Available options for each selector position:
Semi fire
Auto fire
2 round burst
3 round burst
4 round burst
5 round burst
Semi with ramping
Burst-auto hybrid
"Semi w/ Ramping" fires in semi and switches to full auto if the trigger is rapidly tapped.
"Burst-auto hybrid" fires in burst and switches to full auto if the trigger remains held down.
Can convert any AEG to semi-only by having both selector positions set to semi fire.

Realistic RoF Control
Both fire select positions can be individually configured with a different RoF.
Every cycle runs at full speed and pauses between each shot to reduce the RoF.
Provides the most realistic feel and sound compared to any other forms of RoF reduction.

Adjustable Precocking
Precocking stops the piston in a compressed state so the next shot is near-instantaneous.
The precocking is fully adjustable and thus also compatible with short-stroked pistons.
Offers improved realism and trigger response for sniper or low RoF builds.

LiPo / LiFePO4 Monitoring
Monitors LiPo and LiFePO4 batteries to cutoff power before overdischarge occurs.
Simply set the number of cells and the controller will use the proper cutoff voltage.

Programmable Digital Fuse
Sensor-based current monitoring negates the need for a physical fuse.
Cutoff threshold fully adjustable to help protect low-output batteries from over-current damage.

Gearbox Reliability
Eliminates the trigger jam normally caused by the cutoff lever stopping at a certain position.
The cutoff lever mechanism is no longer needed, greatly reducing the chances of semi-fire related issues.
The anti-reversal latch can also be removed to make gearbox reassembly much easier.

Spectre comes with a original Deans T-Plug

Wednesday, 4 May 2016

Project Start: Tokyo Marui M4A1 SOCOM Next Gen. Recoil Shock

Tokyo Marui M4A1 SOCOM Next Gen. Recoil Shock Project start

Spring is finally here and our airsoft season is starting fully. I wanted to have something new and interesting to tinker around. So I was able to acquire second hand unused TM recoil M4 that has been laying in closet since 2009.

Gun in in good condition but internals need some sweet care. New TM Gun should shoot about 0.9J but this one shot only 0.5J! Overall performance is really sluggish etc. Time to open it up and upgrade this beast where it belongs!

My plan is to make my CQB-Gun that shoots about 1,2J with 0.30 BB (for the best range and accuracy). I have some SHS and Orga parts already but I will check is there anything that needs to be upgraded in TM gun. (They work really well with stock setup)

I want to keep this gun in quite basic setup externally. Something like that you can find in movie SWAT. I had G&P M500 handguard laying around and it fits really well to this classic.

G&P M500 is upgraded already wit 1200 lumen LED module so opponents will be stunned by the awesomeness of this!

I also managed to get BTC Spectre for next gen and it will arrive soon! Cant wait for it!

Some pictures of internals that are waiting for this project:

I will be keep you updated how this project progress, stay tuned!

Thursday, 28 April 2016

Lonex / Lancer Tactical MMC PDW AEG

Lonex / Lancer Tactical MMC PDW AEG

Boys from the Tradesoft sent me some interesting new stuff to try out! CQB-AEGs mainly!

I have tested older models of Lonex M4 AEG before and they are really one of the best stock guns (technically) there is! This time I got my hands on MMC PDW model.

This gun goes by many names: In U.S its under Lancer Tactical brand, in Europe its BO Dynamics (or something like that) but its OEM by Lonex and I have here original OEM gun.

I wont write as long technical tests in these english versions (this will change) but I will let the pictures do the talking. 

Gun has some nice features and really top notch internals! All the parts are sold separately as a tuneup parts so this gun is quite a bargain. 


  • QD Spring Change
  • BUIS
  • AFG
  • Polymer Flash Mag
  • EBB Electronic BlowBack (can be upgraded to Recoil Shock)
  • Freefloat Rail System
  • Integrated Mock Silencer
  • Ergonomic Pistol grip
  • Sling attachment point for one point slings in end-plate
  • Fake bolt can be locked back and released with bolt release

Gun itself has nylon fiber reinforced polymer receiver and rail system. Ergonomic pistol grip and crane style stock is also made from same sturdy material. All the small bits and pieces are made from high quality steel and my trusty test magnet attaches almost to all small metal parts.

Fake bolt can be loaded back and be released with bolt release. This makes dialing the hopup much easier. 

Gun also has a EBB that's quite nice feature to have for those who wants some little realistic extra. Its really easy to disable if you want to! (Just remove two screws on top of the gearbox)

 Outer barrel and mock silencer is made from stainless steel. So it gives lots of weight end sturdy feeling for this small gun.

You can add some foam inside the tube to get more muffled sound. Inner barrel goes almost to the front of the can.

Polymer BUIS that can be flipped down.

As said: body is made of really high quality polymer. Body itself is quite light but internals and outer barrel gives this gun lots of weight.

QD-Spring system and recoil upgrade takes all that room inside the buffer tube. You have to use crane-stock or battery pouch to accommodate your battery.

In lonex version recoil shock has to be bought separately. Not sure about BO and Lancer versions.


  • 8 mm. reinforced V2 gearbox (EBB Version)
  • M120 Spring that gives out 1,44J with 0,20g bb and 1,7J with 0.30g (joule creep...)
  • 8 mm. Steel ballbearings with enclosed casing
  • 18:1 Steel Gears 
  • Steel Cutoff lever
  • A5 Ferrite motor (A2 with recoil shock package)
  • Red 14t piston
  • POM Piston head (AoE version)
  • POM Nozzle with o-ring
  • Steel Cylinder
  • Steel Spring guide with ball bearings
  • Low-Res wiring to back with mini tamya connector
  • etc good lonex stuff
Gun uses also nice rotary style hop up with Lonex 70 bucking. Stock barrel is brass and it should be 6.04 mm.

Modified V2 gearbox, quick change spring system can be seen quite clearly.

Nice 14t piston that has full metal teeth rack

Nicest stock gears that I have seen in any gun.

Nozzle has O-ring for better air seal. Cylinder is steel and bit overvolumed. Its meant for 363+ barrel. Compression is great!


My real Eotech goes nicely with this gun! ;)

Performance for this gun is awesome. I could get all the bbs to a oil barrel in 60 meters ( about 200 feet). Thats quite good performance with this short gun. Stock spring gave me about 1,44J with 0,20G and 1,7-1,8J with 0,30g bb, rise in ouput is because cylinder is overvolumed.

Gun shoots too hot for CQB with stock spring but its really easy to change.

MMC is not a light gun and pistol grip is quite large so you need big hands that its comfortable. But luckily its really easy to chance to grip that suits your hands better. Dont be alarmer, I liked it alot but I have large man-hands! ;)

Great performer, solid construction and nice recoil (especially with recoil shock).

Maybe not most beautiful gun on the market.

Wednesday, 27 April 2016

Quick Flat-Hop Guide


This is easy and short version of popular Hop Up mod called Flat Hop, its idea is to have longer contact surface to bb to give it better and more stable backspin.

You do this by

Flat-hop is great upgrade for your airsoft gun, its easy to make, gives good results compared to stock hop-up. It has its drawbacks compared to IR-HOP or R-HOP but in normal AEG 1 - 1,6J power range its a good alternative.

I would recommend this for AEGs with 1 - 1,7J and 0,28g or 0,33g Good quality ammo.


  • Increased range
  • Increased accuracy
  • lets you use heavier bbs 
  • Sounds cool when you are selling your gun! ;)
Cons: (compared to IR-hops)
  • Wears out quite fast, faster if you don't clean your setup regularly
  • Not that tolerant to cold weather
  • Bucking is still acting as air-seal and spins the bb
  • Wont give as good results with heavy bbs and high power levels (0,40+ 3J+)

Amped Airsoft have made really good video guide:

The guide:

"Classic Nub and hopup / Flat-Hop"

You need:
  • Sharp knife or blade (I use spare blades from box cutter)
  • Quick Glue for nub ( Locktite 406)
  • Hop-Up Bucking and Flat-hop Nub (Prometheus Purple or Lonex 70)
  • Fine Sandpaper, to finish your cutting
  • Pliers to turn bucking around
Recommended product, mainly for M4 platform:
  • Lonex 70 Bucking
  • Madbull red (for Wolverine HPA)
  • Prometheus Purple
  • Prometheus Flat nub
  • Firefly Namazu nub
  • PDI Barrels 
  • Prometheus 6.03 and 6.05
  • Orga 6.05
  • ZCI 6.02 / 6.03
  • G&P M4 Hopup unit
  • Prowin M4 hopup 
  • Systema M4 hopup unit
  • Lonex M4 Hopup unit 

1. Take your bucking and turn it around so you can cut off  those pesky ridges that are inside the bucking. Put bucking over your barrel and use your blade to take those off.

2. Finish the process by sanding rough surface to bit smoother. You can use silicon oil to make that even smoother.

Remember to remove ridge that pushes the bb normally and also that longer ridge that goes to barrels groove. This will be explained later.

You can fill that groove from the barrel with glue or silicone. This helps with the airseal!

3. Turn the bucking around again and put it aside to wait for later stages

4. Optional: You may need to enlarge you barrels "window" to get best results. This varies between different barrels. Orga, Prometheus and PDI has already box-like windows so there is no need for modification normally. This also goes with most of the stock barrels. If the front wall of the window is sloped then you have to make these modifications.

Just file that slope flat and make sure that there is no burrs inside the barrel!

5. Put your bucking back to its place over the barrel and turn it around about 45 degrees. So that smooth uncut part of the bucking goes over the hopup window (this is possible only if you cut that long ridge off)

6. If you are using normal flat-hop nub then now is the time to install it to the hopup arm (piece that pushes nubs towards the bucking). Cut it to fit your window (inside the hopup unit) and use some glue to fix it in its place. Cut more from  the "front" than from the "rear"

If you want to use eraser or M-Nub then you need to remove prongs for you hopup-arm and  glue new nub to its place. Remember to cut M-Nub short enough that it will fit your hopup window.

For Prowin M4 hopup you can use normal Flat-hop nub or you can get Flat-hop arm from Shapeways (you can use EIR hops with this!)

6. Just assemble you hop up as normally and start testing. Remember to check that your nozzle alignment is spot on!

If bb curves to one side or the other then your nub is not straight. You can try to fix this by turning inner barrel opposite side but first i would check nubs position.