[w4r10ck]

I recently purchased a Tanaka M700 AICS with a Pre-ban bolt and a factory unrestricted nozzle. The problem however, is that I wasn't informed by the seller that the dial and hex screw inside the bolt were missing.

Is there any place that sells the adjustment dial and the hex screw as well? Right now there's nothing in it's place and I'm sure I'm losing a lot of gas through the open hole. Thanks in advance.

 

[Wolfgeorge]

Sorry I've never seen anything like that for sale.
You could fabricate one yourself though

Wolf

 

[reezo]

Sorry to hear that. In its current state as per the description you provided, I would say the platform will NOT be able to fire because of the massive pressure drop from the missing screw on the opposite side of the nozzle. I am not aware of any PCS screw being sold separately and you might be in need of an entire new bolt. There should be some of them sold in stores..but you might need to have it shipped internationally. If you find it in any store in Italy I would be happy to help although most shoot internationally with no problem.

This said, remember that in addition to the PCS screw there is a black cylindrical piece, a metal ring (I don't think it's plastic) that sits right behind the PCS screw. You might be missing that, as well.

I often question what that's there for but if it's there, it's got to be for a reason

 

[w4r10ck]

Reezo, it still fires and performs great actually. I may just have mistaken this bolt for a PCS one though. I've provided a picture below to show you what I'm dealing with. It still fires like Tanaka's should, very straight and far. Just curious on what bolt I have.

 

[reezo]

Wow that is weird Eheh it looks like the PCS hex and dial screw are missing but how can the gas not slip from the hole created by such missing piece? If you pop the whole bolt open you should be able to see all the way from the top part of the nozzle through the striker spring...which means gas would get away from there.

Anyway, glad to know it's firing..what I wrote on the bolt in stores still stands. I think the only way to get those pieces is to order a new stock bolt.

 

[w4r10ck]

Alright thanks, do you know of any certain stores that would possibly carry them now or in the future? So I know where to look on a regular basis? A simple Google search didn't provide me with any promising results.

EDIT: After disassembling the bolt, it looks like there is a perfectly fitted black piece put in to fill the hole where the PCS knob would be. Is this piece not normal, and could've been placed there by the seller? I'm just curious to know if that's a common piece or if the seller had it put there so I can contact him and move on from there.

 

[reezo]

Ok that explains the reason why the gas is going into the nozzle regardless of the PCS screw..I never saw a bolt like that but it might be how the non-pcs looks like.

This store in San Marino (near Italy) usually has the PCS bolt:
http://www.safarasoftair.com/index.php?main_page=product_info&products_id=8096

If you need help with it let me know. I am not affiliated with the store but I shopped from them more than once in the last year.

Without PCS you won't be able to set the FPS but that is not a problem if you plan on having an external air rig.

What might restrict the FPS on your output might be the restricted nozzle. Check if your nozzle has inner rings that reduce its diameter..we are getting those in Italy after the restrictions that was forced on Tanaka Works by the state of Japan

Having a sealed wall instead of the PCS screw might have its advantage in terms of air seal

 

[w4r10ck]

Alright, thanks I'll keep an eye out on that website. Looks like they carry a few other rare parts for the Tanaka rifles as well.

After talking with the seller, he said he was told to adjust the FPS, you had to adjust the screw that tightens or loosens the striker spring. He said the sharper the strike the more FPS it will have.

Here is the screw he was talking about. I've never heard this myself, so I'm not sure if it works that way or not.

 

[Wolfgeorge]

Yes that's possible but it's not the correct way.

I don't know how but I've seen 2-3 guns with missing pcs screws!
I don't know if you can find a pcs bolt on a retailer shop, the pcs is discontinued for some years.
If you want another bolt you can get the G&G Power Bolt, it doesn't have a PCS but it certainly produces more fps than the stock Tanaka bolts.


Wolf