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Building a Multi-Caliber Handgun System

There’s no need to panic if you make your handguns compatible with multiple chamberings.

MGI Marck 15 Hydra

Switching calibers on an AR-15 platform is no longer a Herculean task.

Springfield's Multi-Caliber 1911

There are some good reasons for multi-caliber guns. High on the list is a shooter's...