$200-Tax Stamp (Approved 11/14)
$433 Barrel and Flash Hider (Back ordered until mid Dec) You can save money by getting your barrel cut/re-threaded.
I also had to buy some tools as my tool bag was lacking.
I'm not planning on suppressing it, but I do have an Octane 9 HD2 in jail.
Assumimg form1 sbr
200$ sbr tax stamp
Buy supressor you want 600-1200$ depending what you want
200$ supressor stamp
300$ factory barrel or 115$ to have it cut
80-100$ threaded front assembly
So approx 2200$-3100$
Gemtech G5 Suppressor: Total cost was around a grand between the suppressor ($800ish) plus $200 tax stamp
Factory P90 Barrel off Gunbroker: $850 (like was said above you can cut cost here by getting your factory PS90 barrel cut and threaded or by buying a barrel from CMMG or Stryker)
SBR Tax Stamp: $200
Laser Engraving: $50
I paid a guy to perform the barrel swap for either $50 or $75 but I don't remember exactly
Pretty sure that's it...