54rndball
take to the hills
Very much thinking about a complete upper from PSA in 300 Blackout to slap on top of a Colt M4 receiver. Any legal requirements to consider since we live in the crazy state of MD? The idea is to get a 16 inch barrel to go with. Also, does PSA make complete rifles which are good for MD? PSA just seems to have great deals. Thanks for your input.