Samurai

Don't reinvent the wheel. Especially if you don't have a lot of experience with it. These are at least two full time jobs: designing user interface and coding it. If you want a shop, use a ready made webshop engine, like opencart. Then pay a designer to create the unique design for your shop. If you just want to be present on the net, use facebook - and maybe if the shop is something special then pinterest, instagram, twitter, etc. There are many free papers on how to use those effectively to increase your sales. As a professional programmer I would say: only create new code if you can't find one already done. Creating and maintaining custom code is the most expensive way to do it.

Most probably something has changed around the trigger contact. Maybe the two copper contacts came a bit more apart, meaning the trigger needs to be pulled a bit more than before. In the G36 the hole in the grip for the trigger is not long enough to allow the trigger to fully move back. Check the trigger switch contacts or make the hole for the trigger a bit bigger.

If it's a hi-cap, wind it up some more. And more.

Is it a hi-cap? If you pull the small thing that holds the BBs in, does it spit the BBs in your eyes?

I'm with jcheeseright. Is it inaccurate or too weak? Then fix those parts. If it shoots fine, you have nothing to gain by replacing perfectly working parts with different parts with supposedly better quality but with slightly different sizing. If it happens to work fine, you'll get the same results as now. Go for external upgrades. Find the best sling, red dot, foregrip, stock, fastmag, etc, or paint it. There's a lot that can be done, without opening the gun. Edit: just read the 0.20. Use at least 0.25, or even heavier.

How strong is it now? IMO just change the spring and clean it. Real sword's barrel is fine, no need to get a TBB. It would only give you some fps but since you are changing the spring too, you can get the fps there.

It doesn't fit anyting else.

IMO you can use that setup in cqb just fine. If you want to go to a woodland site, I recommend an AEG. Pistols don't have the range and the needed capacity for that. Also for CQB I strongly recommend face (teeth) protection.

By correcting the AOE you need to cut the second and maybe the third tooth, keeping the first.

You can test the airseal between the GB and the hopup by plugging the hopup's bb feeding part (with your finger) and taking the end of the barrel in your mouth and blowing air in it. Best done with the GB and barrel removed from the gun. If not, it looks silly. Disengage the AR latch before doing it so the nozzle and the piston is in a forward position.

I don't know if there is a G&G compatible NPAS, but if there is, then that's the way to lower the fps.

On the real steel one (Benelli M3) it swithces between semi-automatic and pump-action modes.

Using bio BBs is not such a bad idea in my opinion. I'm no green at all but I use them instead of the never degrading ones. We pour quite a few bags of plastic on the airsoft fields each weekend. I think that adds up too fast.

If unsure, test it.

And it even moves!

Most probably it's because of the better airseal you got with cleaning/greasing it fresh. Or it can be simply because of a different setting of the hopup. Edit: or maybe you used different chronos for the 2 measurements.

http://www.taiwangun.com/en/electric-air-soft-guns?pr=18 Check if the description says something like "New Enhanced Hop-Up chamber compatible with GUARDER rubber and with other TM-standard Hop-Up rubbers." means that it's the new version

A&K is a very good choice now. The new versions that came out recently have aluminum body, CNC'd ras and finally the internals are fully TM compatible - even the hopup.

If there is a AS event where it's actually needed, call me, I'm in.

In my opinion: big, heavy, shoots quite inaccurate and will slam fire after a few games with it. There are much better snipers out there. If you want to upgrade (means quite a lot of money) then Bar-10 or well's fully vsr-10 compatible one. I think that's mb-03 but not 100% sure about it. Or A&K M24. This comes with steel trigger set and metal piston so you only really need to upgrade the hopup and barrel later. If you can afford a Marui vsr-10 then use it as it is for a while. If you get the bar-10 then get steel sears (like SHS) and use it for a while like that. If you still into sniping, then upgrade.

Yup, it's 99% you are slapping the trigger. Pull the trigger fully on each semi shot and don't release until the cycle is done.

Well I haven't tried that but evike says they're the same: http://www.evike.com/products/34138/

It's the same as the Marui M9 Beretta mag lips (just the lips, not the whole mag.)

Try an other BB brand. There are some that don't slide on eachother too well. It's easy to remove the lip. There is a pin across the top. Push that out to one side (it won't move to the other side) and you can pull the top out.

Why? My best shotgun was a single shot, and it was amazingly accurate. Perfectly skirmishable.