Tokyo Marui M870

fuhrmanz · December 1st, 2014, 18:02

I try to find a place where I can get a M4 pistol grip and a crane stock to fit on the AG gas chamber. Anyone have an idea? Airsoftparts and airsoftstore don't have both of them. Thanks for your help!

Ross · January 26th, 2015, 21:45

does anyone know where we can get replacement parts for the TM breacher?

N_Force · January 26th, 2015, 22:50

What parts you're looking for??

Danke · January 26th, 2015, 23:04

Quote:

Originally Posted by fuhrmanz

I try to find a place where I can get a M4 pistol grip and a crane stock to fit on the AG gas chamber. Anyone have an idea? Airsoftparts and airsoftstore don't have both of them. Thanks for your help!

Just find some buddies with WE M4s that have swapped grips and stocks.

Ross · January 27th, 2015, 03:15

Quote:

Originally Posted by N_Force

What parts you're looking for??

I'm looking for a tm breacher pistol grip.

jamuke · February 11th, 2015, 20:40

looking for info on the 2 orings for the inlet valve in the stock, that the gas resevoir valve pushes into

can't find it on the parts diagram

sadly 1 of mine had shredded and the gas dumps with only 1 in
can anyone help me save $200 on an AG m4 resevoir purchase by
helping me with a $2 oring
also looking for a replacement butt pad unit

N_Force · February 11th, 2015, 22:46

I only have 870T-56, the one you need looks a bit thinner, not sure if they are the same.

fuhrmanz · February 14th, 2015, 11:01

If you do still have it in hand (oring), bring it to a local hardware store but with clerk behind a counter. I destroyed my AG oring and he found me some. Picked up 3 for 2.75$. If you can remove your part, bring it with you to test it.

augherk · February 15th, 2015, 14:42

Any idea of the 870's compatibility with real steel as far as the pump/handguard goes? I hate how skinny the stock one is D: How much modification would it take to put a RS, or perhaps a maruzen pump on?

jamuke · February 21st, 2015, 17:16

Went with the Angry gun stock adaptor..it was great.. for a day..
I seem to now have developed a major leak from the front of the gun.

I have removed the stock, and lubed the o ring to the resevoir and oring around the mounting screw
but I still get all the gas just escaping out the loading area as if there is a seal missing, as it blows out just as fast as I fill..or something is stuck in an open position

the day before I had taken a few test shots when I first installed the AG stock and had great fun shooting but found the gas empty the next day, figured it just needed some rings lubed but now its gone all to shit

N_Force · February 21st, 2015, 17:54

http://airsoftcanada.com/showpost.ph...31&postcount=5

Do you think the gas leak is coming from between stock and receiver? Check above post, "fixing gas leak between stock and receiver". That possible after you changed the stock and leave some space on between. Get extra one more o-ring from dollar store, hope that is it, good luck.

jamuke · February 21st, 2015, 18:23

Sadly no,
its definitely near the loading area around the brass tube and spring..somewhere inside around there

fuhrmanz · February 21st, 2015, 22:28

the brass tube and the spring? I try to find it and cant see it. I did test mine and it kept the propane in for 1 week in the tube without leaking (it sit about 1 meter from my bed, I would smell it). I can only see it's an oring snapped or the valve is not tight enough/oring snapped.

N_Force · February 21st, 2015, 22:41

One of the reason I would like to keep both of my Marui M870 and breacher with original external gas tank, is that when I'm done gaming, I just remove the gas tank, without keeping the gas pressure in internal parts, it might reduce the life of use. Keep it healthier. Marui design for 134c mainly. Green gas and propane have excessive pressure to shorten life of use. Also can carry more extra tank for gaming. I have five tanks for breaher.
I suggest empty your AG gas tank after game use.

jamuke · February 21st, 2015, 23:48

Quote:

Originally Posted by fuhrmanz

the brass tube and the spring? I try to find it and cant see it. I did test mine and it kept the propane in for 1 week in the tube without leaking (it sit about 1 meter from my bed, I would smell it). I can only see it's an oring snapped or the valve is not tight enough/oring snapped.

Where you load the shell you can see the brass tube and spring mech straight ahead..the gas seems to be venting about 1 cm to the right

I'm sadly going to break it down

Thanks for the help

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January 26th, 2015, 21:45	#287
Ross Trader rating Join Date: Nov 2009 Location: Winnipeg	does anyone know where we can get replacement parts for the TM breacher? __________________

January 26th, 2015, 22:50	#288
N_Force Trader rating Join Date: Oct 2006 Location: Toronto, Ontario	What parts you're looking for?? __________________ aka Uncle

February 11th, 2015, 20:40	#291
jamuke Trader rating Join Date: Dec 2008 Location: Trono	looking for info on the 2 orings for the inlet valve in the stock, that the gas resevoir valve pushes into can't find it on the parts diagram sadly 1 of mine had shredded and the gas dumps with only 1 in can anyone help me save $200 on an AG m4 resevoir purchase by helping me with a $2 oring also looking for a replacement butt pad unit __________________

February 11th, 2015, 22:46	#292
N_Force Trader rating Join Date: Oct 2006 Location: Toronto, Ontario	I only have 870T-56, the one you need looks a bit thinner, not sure if they are the same. __________________ aka Uncle

February 15th, 2015, 14:42	#294
augherk Trader rating Join Date: Apr 2012 Location: Mississauga	Any idea of the 870's compatibility with real steel as far as the pump/handguard goes? I hate how skinny the stock one is D: How much modification would it take to put a RS, or perhaps a maruzen pump on? Last edited by augherk; February 17th, 2015 at 00:24..

February 21st, 2015, 17:16	#295
jamuke Trader rating Join Date: Dec 2008 Location: Trono	Went with the Angry gun stock adaptor..it was great.. for a day.. I seem to now have developed a major leak from the front of the gun. I have removed the stock, and lubed the o ring to the resevoir and oring around the mounting screw but I still get all the gas just escaping out the loading area as if there is a seal missing, as it blows out just as fast as I fill..or something is stuck in an open position the day before I had taken a few test shots when I first installed the AG stock and had great fun shooting but found the gas empty the next day, figured it just needed some rings lubed but now its gone all to shit __________________

February 21st, 2015, 17:54	#296
N_Force Trader rating Join Date: Oct 2006 Location: Toronto, Ontario	http://airsoftcanada.com/showpost.ph...31&postcount=5 Do you think the gas leak is coming from between stock and receiver? Check above post, "fixing gas leak between stock and receiver". That possible after you changed the stock and leave some space on between. Get extra one more o-ring from dollar store, hope that is it, good luck. __________________ aka Uncle

February 21st, 2015, 18:23	#297
jamuke Trader rating Join Date: Dec 2008 Location: Trono	Sadly no, its definitely near the loading area around the brass tube and spring..somewhere inside around there __________________

February 21st, 2015, 22:41	#299
N_Force Trader rating Join Date: Oct 2006 Location: Toronto, Ontario	One of the reason I would like to keep both of my Marui M870 and breacher with original external gas tank, is that when I'm done gaming, I just remove the gas tank, without keeping the gas pressure in internal parts, it might reduce the life of use. Keep it healthier. Marui design for 134c mainly. Green gas and propane have excessive pressure to shorten life of use. Also can carry more extra tank for gaming. I have five tanks for breaher. I suggest empty your AG gas tank after game use. __________________ aka Uncle Last edited by N_Force; February 21st, 2015 at 22:46..

Tokyo Marui M870

Airsoft Guns Discussion