I like Gunrunners as well. It's low key and friendly. MPC members hang out there some evenings. When I was a new shopper there, I was never talked down to in the store (which has also been my experience with some of the good IPs on this site that are outside of Frederick). I also discovered that on random visits, one can often find some used treasure show up at the store given the different consignment sales. The proprietor, Bob, always tries to find a competitive price for me when I want something not in his current inventory.Gunrunners www.gunrunnersmd.com in downtown Frederick is my go to place. He will not have one of those in stock but I am sure he can order one. The orders I have done with him have all come in quickly.
Tuesday through friday he is open evenings (5 to 8) and 9 to 5 on Saturday.
Check out Hafers it’s between Hagerstown and Clearspring . I like them . I am in Millersville and drive up there. Always had positive experience there. There is also a store by beaver creek on 40 , right off of 70which I hear is nice but I never been there, but hear they have a lot of stuff . (Hagerstown). Heck I would try Dicks sporting good . But Hafers is where I would start.