Systema TW5 SD6 Project

Karma_ · December 5th, 2014, 21:04

I finally got around to completing the project that I've been meaning to do for the last few years. I originally hacked up a VFC slide stock to fit the TW5 a couple years ago and then it sat. I recently picked up a G&G SD6 from a member on here and began the hack job of combining the two guns together. It was a pain in the ass. There may be a better brand to do the conversion, but I made it work. Overall, I'm quite happy with the way it turned out. It's solid and looks clean. I'll try to describe some of the aspects of the build but my MP5 terminology is lacking. I'll be making up names so just roll with it.

In the picture below I ended up JB Welding two halves together to make it fit right. I couldn't keep the Systema charging tube(?) stock and mate the sight post of the G&G without it looking like garbage. I cut both parts in just the right places then mated them together. You can sort of see a seam line where the tube tapers. I then repainted it. It was a hack but looks great now. You wouldn't know it if it wasn't pointed out.

In the next photo I had to enlarge the suppressor adapter so the inner barrel could get through. Looks nice and clean.

In this photo it shows the heat shield guard thing. In order for this to fit I had to remove some material from the outer barrel and the charging tube. Not a lot, but enough so the screw points could mate up. At the rear of the handguard, the TW5 is a bit big for the heat shield to tighten properly. I didn't care enough to start removing material from it. It's a touch wide but the ribbed(?) part slides over fine enough.

In this picture I'm showing an FCC positive to negative thread adapter. The TW5 is positive, the G&G suppressor adapter is negative. I didn't want to completely disassemble the gun for viewing pleasure but, I had to cut off some of the outer barrel end so that things would line up properly. The FCC adapter was perfect for this job. Thanks Tanner for having this kicking around!

Looking at the photos, things look pretty clean but the process was not. A lot of little careful work to make sure things lined/mated up nicely. Overall though, I quite happy with how it turned out and it's a rare piece for sure.

In hindsight, I probably should have documented this a little better. I'm not sure how helpful this is to anyone interested in doing it. Figure it out yourself!

mr_nuts31 · December 5th, 2014, 23:12

Two things I would like to know because I wanted to do a similar build with my TW-5, first is how difficult it was to install the VFC stock onto the TW-5. Second is how you handle the battery placement.

Danke · December 5th, 2014, 23:38

See the cutout section where the fore grip fits. The battery goes there.

Karma_ · December 6th, 2014, 13:40

Quote:

Originally Posted by Danke

See the cutout section where the fore grip fits. The battery goes there.

Negative. The battery goes in the charging tube so that had to be modified as well. You lose the fun factor of the non working charging handle, but it's for the greater good.

I don't think you could run the battery in the foregrip on the TW5's.

Danke · December 6th, 2014, 13:51

Quote:

Originally Posted by Karma_

Negative. The battery goes in the charging tube so that had to be modified as well. You lose the fun factor of the non working charging handle, but it's for the greater good.

I don't think you could run the battery in the foregrip on the TW5's.

How big is the battery if it fits in the charging tube but not underneath?

I think you do need more pictures!

Ricochet · December 6th, 2014, 19:23

It wouldn't be good to front wire a PTW, they don't have the wiring options.

mr_nuts31 · December 6th, 2014, 21:04

Quote:

Originally Posted by Karma_

Negative. The battery goes in the charging tube so that had to be modified as well. You lose the fun factor of the non working charging handle, but it's for the greater good.

I don't think you could run the battery in the foregrip on the TW5's.

Wait, if you put the battery inside the gas tube, then what did you do with the fuse?

Ranger11 · December 7th, 2014, 12:56

PTW's use a blade fuse on the mosfet, so there is no "inline" fuse to speak of like a stock AEG would have.

Ricochet · December 7th, 2014, 20:32

He's likely using a short board, Airsoft Surgeon, FCC, Systema, etc. Also I imagine a milspec tube for the little extra room.

mcguyver · December 7th, 2014, 21:34

TW5 FET board is inside the gearbox. Only the fuseholder is external, and it is very small.

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December 5th, 2014, 21:04	#1
Karma_ Trader rating Join Date: Feb 2008 Location: Calgary, AB	Systema TW5 SD6 Project I finally got around to completing the project that I've been meaning to do for the last few years. I originally hacked up a VFC slide stock to fit the TW5 a couple years ago and then it sat. I recently picked up a G&G SD6 from a member on here and began the hack job of combining the two guns together. It was a pain in the ass. There may be a better brand to do the conversion, but I made it work. Overall, I'm quite happy with the way it turned out. It's solid and looks clean. I'll try to describe some of the aspects of the build but my MP5 terminology is lacking. I'll be making up names so just roll with it. In the picture below I ended up JB Welding two halves together to make it fit right. I couldn't keep the Systema charging tube(?) stock and mate the sight post of the G&G without it looking like garbage. I cut both parts in just the right places then mated them together. You can sort of see a seam line where the tube tapers. I then repainted it. It was a hack but looks great now. You wouldn't know it if it wasn't pointed out. In the next photo I had to enlarge the suppressor adapter so the inner barrel could get through. Looks nice and clean. In this photo it shows the heat shield guard thing. In order for this to fit I had to remove some material from the outer barrel and the charging tube. Not a lot, but enough so the screw points could mate up. At the rear of the handguard, the TW5 is a bit big for the heat shield to tighten properly. I didn't care enough to start removing material from it. It's a touch wide but the ribbed(?) part slides over fine enough. In this picture I'm showing an FCC positive to negative thread adapter. The TW5 is positive, the G&G suppressor adapter is negative. I didn't want to completely disassemble the gun for viewing pleasure but, I had to cut off some of the outer barrel end so that things would line up properly. The FCC adapter was perfect for this job. Thanks Tanner for having this kicking around! Looking at the photos, things look pretty clean but the process was not. A lot of little careful work to make sure things lined/mated up nicely. Overall though, I quite happy with how it turned out and it's a rare piece for sure. In hindsight, I probably should have documented this a little better. I'm not sure how helpful this is to anyone interested in doing it. Figure it out yourself! __________________ *The cost of being legit is high*

December 5th, 2014, 23:38	#3
Danke Prancercise Guru Trader rating Join Date: Oct 2007 Location: Danger Zone	See the cutout section where the fore grip fits. The battery goes there. __________________ Airsoft, where nothing is hurt but feelings.

December 6th, 2014, 19:23	#6
Ricochet How much sand CAN you fit in your vagina!? Trader rating Join Date: Feb 2008 Location: North Delta, BC (Greater Vancouver)	It wouldn't be good to front wire a PTW, they don't have the wiring options. __________________ I have developed a new sport called Airhard. Pretty much the same as Airsoft, except you have to maintain an erection...

December 5th, 2014, 23:12	#2
mr_nuts31 Trader rating Join Date: Aug 2009 Location: Petawawa, ON	Two things I would like to know because I wanted to do a similar build with my TW-5, first is how difficult it was to install the VFC stock onto the TW-5. Second is how you handle the battery placement.

December 7th, 2014, 12:56	#8
Ranger11 Extra Salty and vinegar Trader rating Join Date: Apr 2013 Location: Red Deer, Alberta	PTW's use a blade fuse on the mosfet, so there is no "inline" fuse to speak of like a stock AEG would have.

December 7th, 2014, 20:32	#9
Ricochet How much sand CAN you fit in your vagina!? Trader rating Join Date: Feb 2008 Location: North Delta, BC (Greater Vancouver)	He's likely using a short board, Airsoft Surgeon, FCC, Systema, etc. Also I imagine a milspec tube for the little extra room. __________________ I have developed a new sport called Airhard. Pretty much the same as Airsoft, except you have to maintain an erection...

December 7th, 2014, 21:34	#10
mcguyver Trader rating Join Date: Aug 2005 Location: Northern Alberta	TW5 FET board is inside the gearbox. Only the fuseholder is external, and it is very small. __________________ Age verifier Northern Alberta Democracy is two wolves and a sheep discussing what's for dinner. Freedom is the wolves limping away while the sheep reloads. Never confuse freedom with democracy.

Systema TW5 SD6 Project

Upgrades & Modifications