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TDi Arms X47 – new alternative for C39 AK clone owners

14/07/27 at 6.15pm   /   by Rob Ski   /   29 Comments

Great news for C39 AK clone owners, TDi Arms X47 rail system works with C39 AKs. Lower portion of the rail fits like a glove. Also, rear optic mounting rail fits on it as well (see pictures). The only problem is with upper rail portion, because Century International Arms is using proprietary gas tube which is slightly shorter than regular ones. Please note too that rear neck on that gas tube is too thick to fit upper portion of X47 (without any mods). But fear not, with rear optic mount you can have optic mounted there and you can use your regular C39 upper hand guard. However, if the rail over the gas tube is a “must have” for you, then i have found another solution. You can use on C39 Troy Industries railed gas tube! Pictures below. Let me know if you have any questions about these setups.
– Rob Ski

C39 with TDi X47
C39 with Troy Gas Tube


Ps. If you would like to help us to make even better videos, we are accepting donations now. Our next goal is new lens for our camera!





“Alpha” prototype of key mod rail system for AK rifles.
Troy Industries AK 47 Full Length Rail Review

29 thoughts on “TDi Arms X47 – new alternative for C39 AK clone owners”

  1. Brandon says:
    October 16, 2014 at 8:55 pm

    Hey I see that it looks as if the Troy gas tube will fit from the pics but on the review on your website you say it won’t. Was there any dremmel work needed? Which Troy rail is the one that fits the c39? Thanks

    https://www.akoperatorsunionlocal4774.com/2014/07/troy-industries-ak-47-full-length-rail-review/

    Reply
    • Rob Ski says:
      October 17, 2014 at 11:59 am

      Yes, it fits, but i had to take it off…it was coming lose…

      Reply
  2. assem ahmed says:
    January 4, 2015 at 4:03 pm

    Rob i have the troy gas tube on my c39 it fits fine. Troy has done away with the castle nut so easier to tighten properly. Looked up TDI arms x47 on their website it is $380. They sell the whole unit together. You cannot buy the upper and lower halves separately. Do you have any other source where i can buy the x47 lower only? Or do you know of any other lower hand guard that will fit the c39 without customization. Also i have the DDI AK47 with the K-var Arsenal type furniture on it. Any recommendations on what would be a direct fit on that rifle in the way of hand guards and butt stock? Your videos are amazing. Please keep producing more quickly. Pleasure to watch.

    Reply
    • Rob Ski says:
      January 4, 2015 at 4:17 pm

      You can get TDi polymer handguard (below $50) or Mission First Tactical handguard – both will fit.

      Reply
  3. Evan says:
    January 11, 2015 at 3:26 pm

    Good to know there are some quality stock replacement options available. I am curious however to know if Chaos US quad forend will mount to c39?

    Reply
    • Rob Ski says:
      January 11, 2015 at 4:31 pm

      Yes, but some machining must be done, because there is not enough clearance to fit legs from that dust cover over the rear sight post block.

      Reply
      • Evan says:
        January 11, 2015 at 4:45 pm

        OK Rob. Thanks for your expertise! You guys are awesome, keep up the good work!

        Reply
  4. Joshua says:
    April 4, 2015 at 5:27 pm

    Hey Rob, I was curious what muzzle brake you have mounted to this gun? Great review by the way!!

    Reply
    • Rob Ski says:
      April 5, 2015 at 8:46 am

      This is Venom Antidote. Check this out: https://youtu.be/-bVdTmZdvIM

      Reply
  5. Pedro says:
    July 12, 2015 at 11:10 pm

    Hi Rob I have a C39v2. Was wondering if it has the same problem with the upper rail not fitting. If so what would I need to mod in order to make it fit?

    Reply
    • Rob Ski says:
      July 13, 2015 at 8:18 am

      I don’t have C39V2 anymore, but i don’t recall having any problems on it with that rail…

      Reply
      • Pedro says:
        July 13, 2015 at 6:06 pm

        Ok cool it’s been a toss up between a chaos us titan rail system or the x47 rail system heard good things about both. Thank you for your time I know your busy man, nice to see that you have time for your fans.

        Reply
        • David says:
          September 14, 2016 at 3:17 pm

          I know this is a late post but I recently got off a phone call with a tdi employee and I asked him the same question. After I called him he said he’d try and give me a call back. He said that it fit without any issues. So it seems the x47 fits better on the c39v2 than its predecessor. Hope this helps anyone in the future!

          Reply
  6. Edward says:
    November 9, 2015 at 5:21 pm

    Hi Rob, I have the Century Arms AK63D Underfolder. Since the AK63D is using Hungarian gas tube assembly, will the x47 upper rail present the same problems as the C39V1?

    Reply
    • Rob Ski says:
      November 9, 2015 at 6:34 pm

      I had it on AK63D without any problems. Perfect fit

      Reply
  7. Henry says:
    November 22, 2015 at 6:58 pm

    Will the TDI X47 fit my DDI AK47F milled receiver?

    Reply
    • RJ says:
      June 1, 2016 at 9:16 pm

      Most definitely, however, you’ll notice the folder doesn’t lock-up against the railed lower as well as it does the standard furniture. The folded stock will still lock – mine just had some play and didn’t mate well against the rail. I have the milled DDI Bulgarian UF build and optic mount choices are limited. I just tried to mount the MI red dot mount but realized it doesn’t seem to work on any of the Bulgarian models (also tried Arsenal SLR 107 and 106). A sure bet for the DDI is a railed solution up front (e.g. Troy, Midwest Industries, etc.) and will easily allow co-witness with the iron sights. While I’ve never cared for the optic that far forward, it works well – just a little funky looking.

      Reply
  8. Kyle says:
    November 25, 2015 at 2:20 am

    Rob would this be a better system than the chaos rail system for my DAKM? My rifle will be here in a week and it it’s going to need some better furniture than the ugly black plastic. Thanks

    Reply
  9. James McMillan says:
    January 30, 2016 at 6:26 pm

    Will the top gas rail fit C39 AK47 pistol?

    Reply
    • Rob Ski says:
      January 30, 2016 at 7:53 pm

      No…

      Reply
    • RJ says:
      June 1, 2016 at 9:11 pm

      I should qualify – the TDI upper fits on the C39 pistol. I think the Troy should as well but don’t have one to know for sure. The TDI adds a little bulk – think of it like an exoskeleton in a way. Lock-up is great and so is the ability to have optics over the receiver. Mako also makes a system like this but haven’t tried it.

      Reply
  10. Steve says:
    May 21, 2016 at 3:42 am

    Hey rob. I really love the Tdi c47 lower rails. Is the lower rails available for individual purchase?

    Reply
    • Rob Ski says:
      May 25, 2016 at 7:15 am

      I think they had them sold separately.

      Reply
  11. Mike D. says:
    October 10, 2016 at 2:45 am

    Hi Rob, I have a RAS 47 and I’m wondering if the X47 upper rail would fit on there with out modifications?

    Reply
    • Rob Ski says:
      October 12, 2016 at 7:06 pm

      Yes it will fit.

      Reply
  12. Carlos says:
    February 25, 2017 at 11:35 pm

    Hey rob! Will this fit Chinese ak47?

    Reply
    • Rob Ski says:
      February 26, 2017 at 3:54 pm

      It should, but just in case, check with tdi arms

      Reply
  13. Raul says:
    March 15, 2017 at 5:45 am

    Will this fit the c39 pistol. Been having trouble finding a rail system for the pistol version any suggestions?

    Reply
    • Rob Ski says:
      March 18, 2017 at 11:28 am

      Check with TDI Arms to be safe…

      Reply

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