Old man Jay

Tippmann M4 V1/V2 OUTER BARREL - Custom Sizes Available - 14mm CCW - TA50006 | eBay Just literally seen this on ebay, 3d printed but maybe it'd be ok.

you might find a standard bore barrel a good start, might alleviate some of your fps inconsistences, also may solve your hop rubber issue. worth a punt to rule out the tight barrel.

I had the nozzle for sale but removed the advert, I have a few other bits and was going to put it up as a set, does your v1 have either the hard recoil buffer spacer fitted ? or the dave air saving device ? if either of these are fitted its best to remove them and start afresh. This will make dialling in your fps a lot easier. what barrel is in it ? I had a pair of madbull blue shark hop rubbers that actually worked fantastic in mine and they were cheap, hopped .3 no issue. Although the macron yellow should also be fine. Its easier to cut the end off the hop feed lips if you feel the nozzle is ruining them. Depending on who did the dwell mod you can put a bit of grease around the screw to stop leaks. Also pay close attention to your hop unit, I assume its a replacement tdc job, may be worth pulling it out and checking it over. also check the feeding manually to make sure there isn't to much resistance for the bolt when loading a round.

Snap, loved a bit of Stargate back then and there was no marui version, has a ver 3 box with the motor mounted horizontaly under the cylinder. I'll dig it out and take some pics for perpertuity lol

I still own this p90, the plastic has not aged well, was made from an old toytec version that Den had butchered, only issue was having to have a battery bag strapped to the side.