The Fabled term “Hush Puppy” a little-known term that floats around on occasion among the airsoft community. The term’s origins however come from a little pistol the Smith & Wesson Model 39 modified for “special” purposes in Vietnam. The pistol was modified with a bulky suppressor that would lock the slide in position to prevent extra noise while firing. The irons were raised to compensate for the bulky size. The purpose in mind was to shoot sentry dogs and pesky guards without raising alarms.

In Theory
Popular culture in movies & video games love the concept of a stealthy pistol and it’s often romanticized being the ultimate silent weapon. However, in the real world, there are very few weapon systems that operate like so. Enter the airsoft world and you have a stapled TM MK.23, an all plastic hand cannon that is nothing more than a fart in the wind. However, the drawbacks are the over cumbersome size and the lack of FPS. For myself the investment of $300 CAD was steep and the drawbacks had me pondering. I wanted a pistol that was sleek, practical, quiet, but ultimately cost-effective.

Enter the KJW MK.2
The simplest Gas pistol KJW can offer that packs a wallop. Clocking in at 400fps this pistol is loud out of the box & makes a brutal snapping noise from the gas firing. For all that noise the pistol shoots effectively out to 160ft to 200ft. Now keep in mind your not going to be pinging targets the size of a small side dish plate, but hitting a man-sized target won’t be a problem. After the first day of testing the pistol, I started to ponder the build idea in the back of my mind. I did find some other projects online however, I found them to be very crude at best. After a bit of digging, I decided to order an MK.23 suppressor filled with foam along with a 1inch 14mm barrel extension, re-engineer the iron sights to still be effective and to keep the original inner barrel length for the accuracy and range.

The pistol above being the inspiration for the build.

I started off by stripping the pistol to see the internal workings, mainly to find the simplest way to adapt the pistol without heavy modification, thus allowing me to switch back to the original outer-barrel if desired. Luckily for me, the MK.23 suppressor has a lip at the end to act as a barrel extension. After cutting a notch in the 12oclock position to lock into the inner-barrel stabilizer, and to second that drilling a small hole in the 6oclock position to allow for an external screw to secure the suppressor to the upper receiver on the pistol.


The next step after attaching the suppressor to the lug is to better stabilize the inner-barrel. Now mind you the inner-barrel action moves, so keep that in mind you do not want the inner-barrel to be fixed! I found a simple solution in a 1inch barrel extension. Using the O-ring that came with the extension, and going over the inner-barrel to the suppressor lug to help keep the inner barrel in the centre, and sliding the 1inch extension over. now all that is left is to attach the suppressor and bring the front-sight back to the main body.

For the iron sight, I decided to settle on the idea of fixing it to the body, to prevent any serious drawback to the suppressor alignment, and to allow the original barrel to be re-attached with ease if desired. After removing the front sight I realized the screw hole was the perfect size to fit over the hop up adjustment whole without any modification. Measuring out the front whole to allow the front sight to be attached I drilled a small whole allowing the post to sink into. To secure the post I used a small amount of super glue. and sanding down the nub a bit to prevent interference with the internals the front sight was set!


The last bit of work was stippling the grip on the pistol as the standard smooth wave style was disgusting to hold. This can be done using a soldiering iron and simply tapping the plastic lightly. Strongly advise listening to something or watching TV while doing this it takes time!

The results were better than I expected. There is no play in the suppressor extension, allowing the inner barrel to move freely with the inner-barrel only protruding a little under half of the foam filled suppressor. The sound reduction is very noticeable being difficult to hear at a range of 160ft (yes this pistol shoots that far accurately). This easily rivals the TM Mk.23 now in sound accuracy and range at a fraction of the cost. This pistol build cost me a little under $200 CAD coming in at $170.00 dollars total.

I encourage any DIY tech to go out and to try building one of these little bad boys yourself, it costs little to nothing and makes the MK.2 or Mk.1 series far more effective in the field. All things considered, it makes this NBB pistol something worth carrying around for those pesky sentries and targets preventing you from “snake-ing” around the field quietly. The practical application of the Mk.2-.1 series is questionable but this nifty little build gives more purpose to having one. I know having this in my back pocket is a bit more peace at mind for those awkward moments my rubber knife isn’t effect along with my primary.

– Schoolboy out