Anyone planning on using the .50, or the 20mm for their personal tactical weapon has a penis complex. Its to heavy, to costly to own and operate. The Military application of both calibers are for hard targets. Tanks. Bunkers. Trucks. Etc. Not for engaging enemy soldiers.

Overkill.

"We're not just going to shoot the bastards, we're going to cut out their living guts and use them to grease the treads of our tanks." - General Patton.