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That's right!!! You asked for it ...and we delivered!!

Now you can have a Certified "HSA Build" Systema PTW M4A1 MAX Challenge Kit + HSA 60 DAYS LIMITED WARRANTY!!

But it get even better!!! Add any of our R.I.S and the installation will be "Free Of Charge" (Normally $30 and up depending from the Type of Rail System Chosen as many require mods)

Let the Best and one of the first PTW Certified Armorer take the guess work out of the equation.... We build, customize and Certify them W/60 Days HSA Limited Warranty....ALL for an incredible LOW price! (EXAMPLE) Just look at the saving:
(PTW MAX $1495 + DD Rail $105 + CUSTOM Installation (not some SLOPPY Job we have seen) $40+= $1640...
that's already a saving of $185!..+ if you PAY CASH we pay your SALE TAX and that's another $130 OFF!!
all together you get over $315 in SAVINGS and we are pretty much the ONLY one in US to GET THEM!!



  • Full-scale improvements to the control board
  • Improvements to the Electrical Control Unit
  • New mechanism
  • NEW PF-490 Motor
  • Flat Top Receiver
  • Removable carrying handle
  • Collapsible Stock
  • Safe/Semi/Full Auto
  • Magazine Capacity : 120 Rd
  • Caliber : 6mm
  • Cylinder unit : M150 (500 FPS)


Since our debut we improved two minor areas primarily focusing on the circuitry board, however since 2008 we have released our new models with major improvements.

The characteristic of the 2008 model (Changes in Specifications)

  • Full-scale improvements to the control board
  • Improvements to the Electrical Control Unit
  • New mechanism

As a new addition since the 2008 models we have added an LED feature to the S.E.C.U., which will indicate the present state of the PTW during engagement. With this feature it will be very easy to determine the condition of the P.T.W. ; when to change the battery, to any serious issues with the P.T.W. can be determined at a glance.

For example:

If the LED is lit;
The Control Cable is disengaged (cut). Or, if the battery with a voltage of less than 2.7volts were connected the LED would indicate it as such. Or, if the battery is simply drained. If the CPU does not function properly → the use of the PTW in extremely low temperatures. In those cases the LED would be lit and will continue to be on till any of those issues are resolved. In any of those cases (which we view as minor); by reconnecting a properly charged battery will reset the system.

Flickering LED
In contrast, during normal operating conditions if the Sector Gear cannot detect the hole for a period of time the LED will flicker on and off. This symptom can mainly be attributed to possible situations such as a blockage of the function aperture by grease, or the possibility that the detection photo IC diode is covered or smeared in grease; in either case the removal of such obstruction is the simple remedy. In this way the 2008 model will be able to identify potential issues simply by LED thus aiding the end user in addressing the issues and to aid in the appropriate actions needed to resolve those issues.

The change in the main CPU
Conventionally the CPU program that was used was only able to write one time, since the 2008 model the number of re-write was increased to a 100 times.

In doing so, we are able to make many numbers of changes to the program, which allows for more flexibility. With that it is possible to dramatically increase the calculation speed necessary to increase the trigger reaction speed.

Trigger Reaction Program Changes
One of the wonderful points of our PTW is how the trigger responds to rapid shooting, however since the 2008 models we further polished it by making changes to the trigger reaction program in Micro Second increments thus allowing an even more crisp trigger response control. This program was designed exclusively with the recently released 490 Type motor in mind.

Changes to the Burst Fire Program
Conventionally by switching the trigger switch to the on position every pull of the trigger would discharge three rounds at a time, however with the 2008 model even in the burst fire mode with the proper trigger control one or even two shots can be achieved. With this program change, the effectiveness of burst shooting improves remarkably.

Changes to the Trigger Switch
It was our technology to produce a two-stage trigger with most of its functionality based on electrical operation; however by using an even shorter stroke we are now able to mimic the trigger travel of a real firearm. In combination with this modification we also changed the quantity of the trigger stroke. There is nothing that comes closer to this feeling outside of a real firearm.

Improvement of the S.W.D.

Changes to the FET
Conventionally we used 7 crystals in our FET in our circuitry board however in changing it out to two large capacity crystals we wiped out the possibility of individual differences in the varying crystals; thus improving on the overall longevity of our FET. Furthermore, by improving on the base structure itself we are able to reduce any overwhelming power consumption. For the MAX series in particular in comparison to our conventional model we can say that the efficiency has improved by three times.

The adoption and standardization of the PF-490 Motor
As previously mentioned we released the PF-490 motor for the limited production M733 series, however starting from the 2008 series we have incorporate this motor in all of our models. The characteristics of this motor are as follows.

The precision manufacturing of the Rotor
Specification changes to the winding of the coils.

By using six different varieties of wires along with six different variances of winding we were able to experiment with a total of thirty-six varieties of rotors; through extensive testing we were able to select the best choice in wire and coil combinations. The technique of hand winding the rotor has celebrated great popularity.

Dimensional management of the core piece for insertion.
The dimensional proportion of the core piece insertion (in relation to the shaft) is strictly enforced by about 10 times more than the general accepted tolerance. By managing the dimensions strictly, we are able to realize a high torque motor while maintaining an extremely smooth spinning motor.

Balancing the precision rotor
Much more than our conventional rotors, we invest a greater amount of time to balance the rotor.

Three bearing support
As opposed to the general motor, due to the longer rotor used in the PTW Motor the use of three bearings is needed to support the rotation balance.

The use of a Stainless Steel Brush Case
Because of the wiring installation, additional stress to the brush case is applied, therefore the need for a reinforced brush case is important; which is why we chose to use a stainless steel brush case. To reduce resistance from friction high quality chrome plating is added.

Large size Carbon Brush
We adopted the use of our large size Carbon Brush utilized in both our Turbo and Magnum motors. Upon careful analysis of the brush materials we found that it can handle large volumes of energy with ease.

Neodymium Magnet
For the 490 Series Motor we implemented an even stronger Neodymium Magnet. The magnet force easily exceeds 4000 Gauss and is of a heat resistant grade (Neodymium Magnet is very weak against heat) so in our research we realized that this is the strongest material used for our magnet. In our conclusion we determined that our newest series SYSTEMA motors have the strongest torque in history yet at the same time the lowest consumption of energy. Through strong torque, regardless of what kind of spring is used crisp trigger response can be achieved thus giving a better shooting experience.

Incorporation of a Tight Inner Barrel for all models
Through an ardent request from a P.T.W. user we developed our Tight Inner Barrel (inner dimension 6.04mm); however we decided to adopt this for all of our models.

Other areas of improvements:

Changes to the Air Seal Packing
Due to the flexibility discovered during assembly, we decided to change from the conventional Air Seal Packing with an O-Ring. We believe that due to the ease in installation fans of our Challenge Kits will enjoy this improvement.

Change in the Piston Head Guide Sleeve
The method of affixing the Piston Head to the Piston has been changed. Locking screws are applied on both sides thus improving the affixed torque. Just in case the Rack Gear is damaged replacement and maintenance that follows will be easier to accomplish.

Changes to the Bolt Stop Locking Pin
Instead of a Knock Pin we will change it to a Roll Pin. The Roll Pin adopts a wave format which maintains a consistent and precise operation.

Standardization of the Cylinder Unit
Since the beginning of 2007 we standardized the Cylinder Unit to the M4 version. By unifying this product throughout the models we have raised expansibility to a higher dimension.

We are filled with appreciation to our fans for allowing us to continue development of this single product for three years. Although we believe that the majority of the points have been addressed, we continue to pursue perfection. We will continue to hone the P.T.W.

This is what SYSTEMA is all about as an organization, and the P.T.W. is a product that deserves just such attention."