Who designed the guns used in the "Limited Class" and "Open Class" pistols offered by A & B?
A &amp; B High Performance Firearms A & B High Performance Firearms was a competition pistol manufacturer. Products included the "Limited Class" and "Open Class" semi-automatic pistols, both available in .40 S&W and .45 ACP. A & B sold directly to consumers.
.50 BMG The .50 Browning Machine Gun (.50 BMG, 12.7×99mm NATO and designated as the 50 Browning by the C.I.P.) is a cartridge developed for the Browning .50 caliber machine gun in the late 1910s. Entering service officially in 1921, the round is based on a greatly scaled-up .30-06 cartridge. Under STANAG 4383, it is a standard cartridge for NATO forces as well as many non-NATO countries. The cartridge itself has been made in many variants: multiple generations of regular ball, tracer, armor-piercing (AP), incendiary, and saboted sub-caliber rounds. The rounds intended for machine guns are linked using metallic links.