Go back to PatrolBase.co.uk

It’s what’s on the inside that counts…

Yep, that good old saying. Well this time, it is most certainly true!

For those who haven’t seen the home-page banners, Facebook posts or even our YouTube content. We have the new ASG – CZ Scorpion EVO 3 A1 2018 Revision in stock. If you are desperate to grab one before everyone else does then click here.

For those who hate to read, here is our latest video showing off a brief comparison, but for those finer details and s*xy photos, keep on scrolling!

What are we doing here?

We are stripping the new EVO 2018 model down to its bare essentials, to find out exactly what you are getting if you decide to upgrade, or you are about to buy your first ever EVO.

Why has ASG updated their original design?

Don’t panic, its not a bad thing. ASG designed and manufacture the Evo from the ground up. Because of this they are committed to making the gun the best it can be. The changes are a result of learning and experience in the field of manufacture.

It’s almost like buying a car, you can get a BMW, but every few years they bring out a new model, a facelift. The EVO has a majorly reworked gearbox once you start looking into the details. Let’s get to it, shall we?

The casing:

Every picture from here on is going to be labeled with 2018 model and the previous model, just so you can’t get them mixed up too easily at a first glance.

The casing has physically been produced with new metal properties, Zinc, this results in the case physically weighing more and has also been used because it is easier to cast and allows for more consistent moldings

The first pic above shows a new wiring routing system that prevents wires from breaking and 10x easier to dismantle to gain access to the internals of your gearbox. The front of the case has also been chamfered to prevent any front end cracking as seen with other none-rounded gearboxes.

The guides on both sides of the gearbox have also been CNC machined properly to withstand more use, wear and allow for a more positive selection of your desired fire mode.

The Righthand side of the gearbox also shows off the ASG logo which can be seen from pulling back the charging handle without having to dismantle your gun.

As seen with the picture above, the left side of the gearbox casing has also had some major updates. The holes that allow the microswitch sensors are now rounded off. Once again, less likely to crack when users decide to upgrade for higher FPS or rate of fire builds. The tracks are also wider on top of the selector to allow the gearbox to sit tighter in the receiver for a more positive and secure fit.

Lastly, as seen above the base of the gearbox that your pistol grip sits flush up against will now 100% be flush fitting. This allows for a more accuratle angle of engagement between your motor pinion gear and the gearboxes bevel gear.

What about the insides? We hear you scream:

Those have also been updated. As seen below, material has been removed to allow for a wider range of gears to be used should you wish to run a different ratio, DSG or something else absurd.

The new zinc-based material results in a smoother finish too alongside more time spent on quality CNC machining after being cast. The gears and electronics are all exactly the same, those parts have not changed!

The major updates are to the piston, piston head, cylinder, cylinder head and tappet plate. Let us start off with the piston, this is an absolute must-have update!

The end rack has been extended from 3 to 6 metal teeth. This allows for the gears to have a more direct and strong mesh, a must for anyone seeking a higher rate of fire and FPS reliability.

As seen above, the piston has also been stamped with ASG trades. This is also seen on the piston head.

The piston head hasn’t just been stamped though. There are additional holes which inflate the o-ring more to improve its air-seal.

Next up, the cylinder has been upgraded in material quality to steel that will withstand more piston cycles. Again, ASG is doing this update so you can buy and AEG that lasts longer on the field between servicing and allow you to enjoy your investment for more years to come.

The cylinder is identical in length, but the hole that allows air in to create a volume is now simply a new shape, the outline of the ASG logo. Nifty, don’t you think?

When combined with the cylinder head, the air-seal is one of the tightest we have ever encountered. We love this new design where the rubber cap is removable (you don’t need to), but is designed to absorb more impact. This lessons the firing sound of your beloved EVO.

The head is rippled to reduce the contact with the cylinder head, this is designed to make the EVO sound quieter when firing. The new cylinder head design also removed the issue of sorbo pads falling off eventually because sometimes that happens after use or in fluctuating temperatures,

Lastly the tappet plate, this one is new to ourselves. The end that catches onto your sector gear/sector delay clip has been stepped. This reduces the chance of shims going flying upon disassembly but to also run smoother and feed BB’s more accurately under high rates of fire.

Let’s have a rundown of the updates:

  • Revised gearbox design
  • Revised gearbox manufacturing process, with a cast and CNC finished process
  • CNC machined gearbox selector gear plate guides
  • Gearbox now uses a zinc-based alloy, rather than aluminium alloy
  • Gearbox is slightly heavier resulting in a more realistic weapon weight
  • Slightly heavier gearbox for smoother operation and deeper muzzle report
  • Simplified gearbox casting features to minimise cracking
  • Additional  bracing surface to make the gun more rigid and robust
  • Improved cable routing to reduce wire wear and tear
  • Gears are now slightly closer together for improved meshing
  • Sector gear now sits closer to the piston to improve lifespan
  • Revised piston design, bearing the ASG Logo
  • Piston now features 6 metal teeth
  • Piston’s second tooth pre-removed for smooth engagements
  • Piston’s guide rails are slotted specifically to work with the revised 2018 casing
  • Revised steel cylinder
  • Cylinder now created from high precision steel
  • Cylinder now features a black finish, with ASG logo shaped porting
  • Cylinder features better air seal over previous revisions
  • Cupped/flanged piston head
  • Cushioned cylinder head, and functions similar to a sorbo pad
  • More consistent FPS over previous variants
  • Eliminated pre-engagement of the piston

So, are you sold? If so grab one now before the first batch sells out! Simple click here to be directed straight to the 2018 model.


Written by Karl, who has written a total of 170 posts.


Posted in Patrol Base News | No Comments


Back to top