Mechanicus Praetorian H-Alpha-Rho-Kill-3-R

I'm slowly eking my way through the characters in the IG Codex, and I wonder why I haven't  made (or used) Harker (or HaRK3R) sooner. A BS4 relentless Heavy Bolter? Yes please. It took a bit of bits box digging to make him work, however. I'd quite forgotten I had some Maxmini bionic bits left over from some time ago, including these fantastic kneeling legs. His left arm is from an old