Beta.. a guy on youtube did a firing test on a range and let say it's not the most accurate at 150 feet. On the 3 shots.. he got 1 on the panel (human size) but with the 6 shots.. he got 4. But 100 feet and under.. it's practically 100% hit.

@warwick88 . It could be an angrygun side saddle. I've one on mine too. And the G&P forearm. I found an alternative for the flashlight.. one bummer, it's a bit too far.

No mod to fit the mag tube, just spins on.

I use these for shell holders.

http://www.dstactical.com/product_in...oducts_id=2915

I'd say 150' is pushing the limit. At 200' you'd just be trying to rain the BBs.

RW has a SAT Performance Output Valve for this m870, use with original stock only.

Old video? https://www.youtube.com/watch?v=dwA1...ion_1562832865

just received the AG choke tube, this is the closest design as RS one, looks very nice after attached on M870, seems like works with Breacher. will see if I could received the Breacher this week?

http://i1285.photobucket.com/albums/...psc17f1618.jpg

http://i1285.photobucket.com/albums/...ps456ff5e8.jpg

Finally, Both M870 and Breacher are here.....

http://i1285.photobucket.com/albums/...psb70af85f.jpg

http://i1285.photobucket.com/albums/...psff4d0743.jpg

Very nice! Now you need to mod the G&P Front Flash light to the breacher! haha

Yeah, tried to completely disassemble the breacher and found that was sooooo complicated. Even the pistol grip is red thread locked that took me an hour to get it out. The internal, I think I need a whole day to learn about it and make sure nothing missing. What a Japanese engineering! Love it so much. After that, I can see if possible to have the g&p flash light hand grip modify in it?? A lot of fun and drive me crazy.....

Uhm.. I plan to order the G&P flashlight grip this winter and maybe CNC nozzle to avoid breaking in future but now you're scaring me to change both parts. Ahaha!

please don't get it wrong. I'm just enjoying this Japanese engineering for taking it apart. It's a complicated design, but if you do it step by step, with a clean working table, you'll be fine. Make sure you have all the little parts and screws line up one by one, then reverse them back, not too hard. For the cnc nozzle, you have to almost completely taken all apart to replace it. If you have it worn out, you have to have it replace. But the g&p flash light front grip, just have to drop in, need no modify.
REPLACE PARTS WHEN IT NEEDED, I DON'T DO ANYTHING UNTIL AFTER CERTAIN TIME OF USED GOT WORN OUT.
I take it apart is just for my own study and having fun with this awesome Japanese design.
there is a guy in YouTube posted how to disassemble the m870. Check it out. He is so good tho.

This guy has done a very solid series of how-to videos. GSO Gecko on Arnie's Airsoft.

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

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

Taking it apart is not that hard, as long as you get the right way and step by step.

The G&P foregrip with flash light, if I want to install into the breacher, will take heavy modify to get it done, so I give it up for now. Finally it still installs back to M870, Looking good tho.

http://i1285.photobucket.com/albums/...ps5e745255.jpg

http://i1285.photobucket.com/albums/...ps12183033.jpg

http://i1285.photobucket.com/albums/...ps27c2766e.jpg

Really want to see the angry gun stock on the breacher. All the pics, videos and info that's the one thing missing...

Like this g&p foregrip, it's adding more weight in the front, not only having a better balancing and also make the cocking easier with this heavier weight on it. Nice....