u/Doctormeat

ordered the blowback EZTS v2 for my BRN9 since the original 3d printed ones like to explode randomly. its a nice part but the springs are entirely different length. I tried it with the included spring and the bolt didnt really want to go home so I swapped them. That seemed to do it

Everything in my order was just tossed into the box but seemingly all there.

I got my FRT sled installed on my aero partisan lower and it works with both springs, but definitely not enough to send it home all the time with the new shorter spring.

I assume the obvious answer is I got the wrong spring… but figured i’d ask just in case this seemingly normal upgrade isnt compatible with my older BRN9 for some reason.

Thanks