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spetsnazdave87

Tokyo Marui M870 Tactical Gas Tri-shot Shotgun- picture, text and video review

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I will, I've been waiting to see how the gas gets routed from the gas canister in the stock to the receiver. After seeing that posted link with the g&p ar stock adapter install and how the did it, I'll definitely pick up the marui m870 and run it on HPA.

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Will this mag conversion be a simple drop in component and easily changeable back to stock?

 

 

Yes. 

 

Does anyone else have the urge to tap it for compressed air? Olala...

 

I have my MagnumBB Cold Shot ready and a spare tank on order. Will report with results once converted.

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Just dissembled this thing "blind", i.e. without a dissembly guide. Had to do it in order to get the outer barrel out to be machined (adding choke thread)... what a pain in the face just to get to the outer barrel. 

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Yeah...its a pita. Least the gun isnt something you need to take apart a lot of times. Im hoping ff comes out with a short outer barrel with sights for this. I dont really want to modify it.

 

Sent from my Samsung Galaxy S4 using Tapatalk 2

 

 

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Yeah I agree, I like the long barrel look (even though playing it in a CQB site proved to be a bit too long and awkward as it is), especially with a mag extension, things I see in movies / tv a lot but airsoft never replicated, so I'm happy I can work towards it, basically having mine threaded so that I can put on the Express tactical choke on it which I recently bought :P 

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Yeah I agree, I like the long barrel look (even though playing it in a CQB site proved to be a bit too long and awkward as it is), especially with a mag extension, things I see in movies / tv a lot but airsoft never replicated, so I'm happy I can work towards it, basically having mine threaded so that I can put on the Express tactical choke on it which I recently bought :P

Can you give me some more information about your Mag extension? are you extending the actual magazine/shell/thing or the Magazine Tube under the barrel? I really want to make/find an extension for the mag tube for mine!

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Target:

 

 870-Express-Tactical.jpg

 

As a continuation of my 870 modding, just sent off all the files for the shell holder to be made in 7075, tasty! My Meprolight tritium sights arrived from Israel, sadly nothing fits, front sight is far too small, so I will have to machine a sight base that takes real steel sight, which is fine, but I don't know what the fruitcage is going on with the rear sight, anyhow, and here's the barrel / choke mod. 

 

Real steel Remington express tactical choke, modded to fit. 

 

20130920-223040.jpg

20130920-223218.jpg

 

Now I just have to wait for my 2 round extension to arrive.. back order from Midway :(

Edited by blobface
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Used mine extensively today.  Have to say, I love it.  Only fired it in 3 shot mode though.  I tried the 6 shot mode and it is definitely doing the 5 round thing unless you rack it really slow.  3 shot mode works great.  The gun shoots straight and hard on 134a. I was able to get 5 shells out of one gas charge.  Now, has anyone tried installing any RS parts yet?  Like a Magpul MOE forend or a surefire LED?  I know a shell magazine extension won't fit so I will have to try to manufacture one and mod it for a tactical choke as well. 

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Ok, this is rather important.

Anyone who is using green gas, have you notice your gas tank warping and widening on its own towards the rear where the pins seat? seams like mine is getting ready to explode soon.

also, noticed mine over hops with .25 50% of the time.

Edited by BerserkDS
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Anyone who is using green gas, have you notice your gas tank warping and widening on its own towards the rear where the pins seat?

 

Uh, that doesn't sound good. Get some calipers out and measure the increase? I'd be very surprised if that was possible (or at least, if it was due to propane rather than tetrafluoroethane) unless you left the tanks somewhere very hot?

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Ok, this is rather important.

 

Anyone who is using green gas, have you notice your gas tank warping and widening on its own towards the rear where the pins seat? seams like mine is getting ready to explode soon.

 

also, noticed mine over hops with .25 50% of the time.

 

Nope. been running mine on green gas for three days now, left one semi-full last night. No problem so far. Mind you the temp. here is around 27-29C so i haven't been filling them to the max.

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here you go.

 

7kno.jpg
 

I noticed that because of this, the tank does not slide out easily anymore. and causes the walls of the stock to widen, causing my buttpad to be easily removed just by lightly pulling. This has caused my buttpad to fall off frequently during game play from switching shoulders.

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I noticed it was harder to get it out when using propane. Interesting.

 

Has anyone had problems filling up the tank? I've tried three different kinds of adapters/bottles and there's more gas going out than in, and that's causing bad fills (20-30 shot fills).

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