upgrades most JGs or ECHO 1s by basically putting in parts that are way better than the stock brand, but i would definitely recommend getting this one as it is only $1 more than the #1 upgrade, for some weird unknown reason. 5/5 overall this is for those (like me) who basically love their gun and want to make it really good, ty airsoft gi for existing.
increases Longevity (for those who slept in grammar class that means how long it will last)
effective, and you are free of doing the work
these are professionals doing their job, so you get a 2 in 1 upgrade and installation
can take a while took me about 8 days till they notified me they'd ship it
dont know if its just me but the first day i got it back i fired an entire mag till it began to actually fire, perhaps just side effect or something but the first 30 pellets just rolled out of the barrel
Rating: [5 of 5 Stars!]