6mmProShop FN Licensed FN15 Full Metal M16 Gas Blowback Airsoft Rifle
(Model: FN15)

"I am back with a review 1 year later; I still hold that this is an excellent platform to get into the world of GBBs. I have had no issues, and the only non-cosmetic modification I've made is replacing the stock plastic buffer with an H2 buffer and filing down the nozzle gas intake to sit flush with the output of GHK magazines, which I'd strongly reocommend buying. Performance wise it has been excellent, using lower power gas it will get sluggish if you use full auto or fire too quickly in semi, and by too quickly I do mean pretty fast, normal semi should not be a problem, and this is ONLY a problem I encounter with low power gas when I need to hit CQB FPS limits, green gas and stronger do not have this problem, and this is a problem with quite a few GBBs, it comes with the territory.

As far as FPS goes (measured with .20s and dependent on weather):
With blue gas I get 300-330
Green gas is 350-390
Red gas is 380-425
Have not measured with black gas

"So far so good!

I've had this for about a month and a half now and I've had no issues, it chronos right around 330-340 with green gas at my indoor field (will be different depending on temp). Build Quality feels fine, a little stock wobble but nothing terrible, and some minor handguard wobble, but I chalk that up to the delta-ring system, and that should go away when I switch to a free float system.

The inner barrel does not extend all the way to the end of the outer barrel, though that was likely designed that way to keep FPS down, and I've run into no issues yet as a result of this.

I have tried both GHK (m4 & mk12) and Matrix m4 magazines and both feed with no problem. In theory every WA spec m4 mag should be a plug and play replacement. The Golden Eagle magazine that it came with did start leaking, even after o-ring replacement, I was able to get that exchanged through customer service.

I'd definitely recommend this! Especially if it will be your first GBB

"Want to start off with I love shooting it, it's so fun a little heavier than I thought no problem though I could use the muscle build anyway, pretty realistic compared to ones I shot in the past and I do want to say on full auto I did have a lil jam the chamber slide got stuck half way and sprayed all the the green Gass out of the mag and the only complaint I have is I can't tell which way is up or down on the hop-up besides that it's really good