Hey buddy, I'm not too far from you in Maryland. I'll be moving to Ashburn in a few weeks though. I know nothing about BP. I would suggest calling a gun store near you and ask your question to them.
I can put you in touch with the guys at Atlantic Guns in Silver Spring, Md and Rockville, Md. They will gladly help you or will know someone who could.
Make sure you go to the upcomming gun show at the Dulles Expo Center in April. If you need anything just send me a private message. -Chris
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