It's always nice to see a collection of logically assembled rifles.
Did you do the paint yourself?
BCM Upper Receiver Group: 14.5" ELW-F Middie w/ Pinned+Welded Gunfighter Comp MOD 1, BCM KMR13, BCM Gunfighter Vertical Grip - Short
BCM Gunfighter Mod 4 Charging Handle
BCM Keymod QD Sling Mount
BCM Lower Receiver Group: Geissele SD-C, BCM Gunfighter Grip Mod 3, Magpul Trigger Guard and ASAP-QD Endplate
B5 Systems Enhanced SOPMOD
Aimpoint T-2 on a Larue LT751
SureFire M600P on a Haley Strategic Thorntail
Magpul MBUS Pro Iron Sights
I'm not a fan of the Haley Strategic Thorntail mount, but it does the job. I'd like to switch to an Arisaka Inline Scout Mount.