Baikal MP-153

The Winchester Model 40 was a prototype semi-automatic shotgun developed by Winchester in the 1940s. It was designed to compete with the Browning Auto-5 and Remington Model 11. The shotgun used a unique gas-operated system and was chambered in 12 gauge. It was never mass-produced and only a small number of prototypes were made. The Model 40 remains a rare piece of Winchester development history.

The Browning B-2000 is a semi-automatic shotgun produced by Browning Arms Company. It uses a unique gas-operated system with a floating chamber design. The shotgun was chambered in 12 and 20 gauge. It featured a distinctive streamlined receiver and an adjustable gas system. The B-2000 was produced for only a few years and is relatively rare.

The Beretta 1301 Comp Pro is a semi-automatic competition shotgun built on the proven 1301 platform. It features a 21 inch barrel and a Blink gas operating system. The Comp Pro has a competition-focused stock with an adjustable comb and length of pull. It uses a reliable gas system that cycles quickly for fast follow-up shots. The shotgun is optimized for 3-Gun and practical shotgun shooting sports.