Put this together for a "civilian LSW" type build, only fired about 300 rounds through it. It would also be a good candidate for an SPR/DMR build. Runs great suppressed, the downward venting BCG makes a big difference. Just need the funds for another project. Would be willing to sell without the optics for $600. Aero M4E1-T 18" Barreled Upper (rifle length gas) KAK K-Spec Enhanced downward venting BCG (chrome lined phosphate carrier, C158 bolt) Dead Air Keymo Flash Hider Breek Arms Warhammer Charging Handle BCM Vert Grip Optics: Primary Arms SLX 3x32 Gen III Prism (ACSS-CQB-M2 reticle) + Dogman Defense killflash Primary Arms SLX RS-10