Gen 6 Glock 45 with Aimpoint COA.

This is for an HD C4x, which appears to have the same dimensions as the P4, minus grip length.

This is for a 4.25" Springfield Ronin/traditional profile, NOT A SIG.

HK45C with RMR HD Wright Armory I-DOT Surefire XC3 Sub. A Rails 1 Key