Matador Arms has announced the Montgo-9: a monolithic, blowback-operated billet 9mm upper receiver that does not require an AR-15 style buffer and tube. Think something along the lines of an AR18’s internals and you will have the idea. Manufactured in the USA, the Montgo-9 is compatible with any AR-15 and/or AR-9 lower, providing shooters with…
Matador Arms’ New Montgo-9 Upper Receiver: Monolithically Blowback — The Truth About Guns