Toyota Tacoma of Carbines The BCM carbine is such a great foundational tool that offers a robust platform that can easily be upgraded by the end user. We’ve put thousands of rounds through this platform and it’s as reliable as anything else we have in our armory. If you are looking for a solid choice that won’t cause issues due to complicated designs or a system that’s not built for hard use, this carbine is tried and tested to provide confidence to the end user. We added some upgrades to custom