I installed mine yesterday and it seems to shoot visibly harder than my OMW Alpha Trooper and Rampage. I'll be running the Immortal Longstrike through its paces in a few weeks at the Bowling Green HvZ Winter Invitational, but until then, I'll spend time making it functionally a better blaster for HvZ purposes.
Did yours not come with catch springs either?
Nope Mine did not come with the catch springs. I've already emailed OMW along with a few other issues
So I finished the install with the 7kg srping, well let's start off with the Pros
-direct install, no modding needed
-7kg spring priming gets tiring after 80+ rounds of constant firing
I was able to run some shots off the chrony but before the results I ran into some quality issues with the kit
As stated above mine also did not come with the catch springs. In addition dart fit on the breech was looser than what I am accustomed to from OMW. During test fit some of the darts fell out. I cant use my Xplorer darts because of the fit or any other dart where the diameter is smaller than a stock elite. Stefans, forget it, the performance was horrible (glue tip, xtip, stock tip, back rod, cut down nerf, xplorer). Last but not least the plunger tube was not molded well. For whatever reason mine had some casting or something leftover. I had to do my best in sanding it down without compromising the tube. I will check the o-ring after a few more rounds to see if it is tearing it up. Here are the pics
Plunger tube out of the package
Plunger tube afterwards
On with the Chrony numbers (10 shots, with new elites)w/ barrel extension
125.10 (anamoly..)without barrel extension
So all in all, the kit is definitely better than the massacre kit. Good performance and can probably get better with some more tweaks and even a brass breech or angel breech. Priming with my xplorer grip was tiring so not sure that will work well in a war. My stage 3 OMW retaliator easily outperforms this kit. But it's a nice drop in kit and this is what the longstrike really needed and should have been from the beginning.
Should you buy it? That's a decision left for you decide. I like the kit.