Where do I start other than to say this is probably the best FBI HRT replica build ever. I am the founder and MOD of the rep airsoft guns subreddit. I love building these to be as accurate as possible, and no corners were cut on this one… built in the very best Colt AEG platform ever! The VFC. -VFC Colt M4A1 body (best Colt body, $500+) -Polarstar Fusion Engine Gen 3 w/ purple nozzle (completely rebuilt, upgraded, tuned) -Geissele MK4 handguard (OMG replica) -VFC Colt outer barrel -Daniel Defense T2 mount replica -Aimpoint T2 (HolyWarrior) -OMG Geissele charging handle -OMG Geissele Buffer tube replica -OMG Surefire suppressor and flash hider -Troy Iron sights (licensed airsoft version) -Magpul AFG genuine -Magpul Stock Genuine -Redline HPA grip connect -ProWin hop unit (Gen 1, one of the really good ones from before QC went to crap) -custom flat hop nub and rubber I’ve got tons of money into this build. Many of these things you cannot even get anymore. On top of that, this isn’t just a bunch of high end parts tossed together, this has been accurized (see photo of set screw in gearbox) so that it shoots accurately and consistently. I’ve built so many HPA guns, just read my reviews, and this is the gun I built for myself… so you can bet I spent many days building and testing it to be the ultimate Hop unit - I can setup any hop unit you want. Prefer a maxx hop… okay. Flat hop? Sure thing. But, the unit in here right now, per my testing, outperformed the maxx and many others I tried. It’s funny, some guns, engines, bodies, just don’t like some hop units. That’s why it’s important to test test test and find what works best. $2500 obo (worth every penny) PRICE REDUCED!!! $2200