First off, I am not trying to simulate or replicate any real firearm or variant. I wanted a really accurate rifle for outdoor games that could quickly be swapped to a CQB capable gun. I used what is functional yet also what looked good. Without further a due:
SystemA PTW 2007 MAX M4A1 SCK
KA 12.5" two piece free floating RAS
Magpul enhanced trigger guard
KA CQB silencer
PDI 509mm stainless steel 6.04mm inner
Modified hopup (even on max the stock one wasn't enough for .28's)
Rockmount bipod (Harris clone company)
Bushnell Banner dusk and dawn 1.5-4.5x32mm scope
I find the scope on the carry handle is amazingly comfortable to see through as its just the right height. I really don't like how it looks though so I am going to be getting high scope rings and a rail riser to mount it on. Yes I put airsoft parts onto a PTW, I could care less about real steel stuff as for me its performance and cost, not bragging rights or elite-ism. I can take off the silencer, add on a normal flash hider, swap the 509mm inner for the stock M4A1 inner, put in the M90 cylinder, swap carry handle for holosight, remove bipod, and its a gun that isn't too long for CQB games and the swap over only takes 5 minutes or so. Eventually I will be buying a second upper when I get some free cash (damn photography equipment) so I can swap entire uppers instead of parts, also means I get a CQBR barrel instead of M4A1. With the M16 barrel in it and the M110 cylinder, BB Bastard .28's and modified hopup adjusted right, I can hit a torso sized target from 125' with 3 out of 7 shots with a mild cross wind. Keep in mind thats only 380fps so I can still rip in full auto.
Thought, opinions, constructive criticism? Remember that this was not intended to copy any real steel firearm.