Desert Tech is throwing their hat into the bullpup rifle ring with their new MDR and MDR-C rifles. Their new rifles are multi-caliber and can convert without the use of tools. It even holds zero between caliber changes, but I assume some adjustment might be needed between calibers. It has a forward ejection system to chuck spent cases away from the shooter. No word on pricing as of yet, stay tuned for more info from the SHOT Show about the new MDR rifle.