Matador Arms has released a new AR lower receiver compatible 9mm monolithic upper receiver assembly called Montgo-9. One of the key features of Montgo-9 is that the recoil spring mechanism is contained inside the receiver itself and it does not require an AR buffer tube, buffer or recoil spring to operate. This feature will allow […]
The post Matador Arms MONTGO-9 Monolithic 9mm Upper Receiver Assembly appeared first on The Firearm Blog.
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