This Primary Arms SLx 5X Micro Prism uses the ACSS AURORA 5.56 Reticle. The ACSS Aurora 5.56/.308 reticle is a high-performance BDC reticle with a comprehensive toolset for ranging and engaging targets. This reticle uses yards-based holdovers, which are optimized for 5.56 and .308 cartridges.
ACSS Aurora is a BDC reticle, same 1 as the ACOG, roughly. They use the same BDC compensation stratia for 5.56, 308, and the 5.45x39 (new Russian Ak ammo).