TM M870 aftermarket pump options
 

Hey there- Finally got my hands on a marui m870, but I'm not a huge fan of the standard marui pump, or any of the railed g&p offerings actually built for the gun. I much prefer the maruzen style of pump. What sort of work would be involved in getting a maruzen pump to fit on the marui? Thanks for looking?

Maybe it's just me but the foregrip on the stock Maruzen M870 looks just like the Marui foregrip.

from a distance its harder to tell, but maruzen's are thicker and a bit shorter, made with a less plastic-y material, and the finger groove at the top doesn't go the full length of the pump. It's the little things lol

Well if you've tot them both there there's only one way to find out.

Here's how,
Disassemble

https://www.youtube.com/watch?v=p3zD8GL9VBs

Reassemble

https://www.youtube.com/watch?v=xNsdjilxly0

Trouble Spots

https://www.youtube.com/watch?v=F7u4qRz4-Zo

Source
http://arniesairsoft.co.uk/forums/in...tuning-thread/

And this makes it less hassle.

http://airsoftdepot.ca/catalog/produ...oducts_id=3023