Started off with a stripped Anderson Mfg lower receiver late last year and waited for sales to pop up.

Lower

Anderson Mfg Stripped Lower Receiver
PSA MOE Defender Kit
- Magpul MOE Trigger Guard
- Magpul MOE Grip
- PSA Nickel Polished Fire Control Group
- PSA LPK
PSA Classic Premium Buffer Assembly
Magpul MOE Fixed Carbine Stock


Upper

MAS Defense Stripped Upper
MAS Defense 16" 1:8 5.56 Barrel
MAS Defense Low Profile Gas Block & Tube
AIM NiB 9310 MPI BCG
ALG Defense 13" M-LOK V1 Hand Guard
SLR Rifleworks Synergy BCF
Strike Industries Charging Handle

Still needs optics, but right now I'm at $450ish total.