Google's category and hours fields have no way to flag a Class 3 Special Occupational Tax license — the federal designation that lets a dealer sell suppressors, short-barreled rifles, and other NFA items — so it disappears into the same generic 'gun store' pin as any shop that only carries standard firearms. Every store on this page has that status confirmed from its own website, FFL/SOT listing, or direct contact, not guessed from a review mentioning a suppressor in passing.
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Maximum Defense
1330 Dillon Heights Ave., Catonsville, MD 21228
Mon-Tue 9am-6pm, Wed 12pm-6pm, Thu 9am-6pm, Fri 9am-3pm
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Clear Spring Gun Shop
13708 National Pike, Clear Spring, MD 21722-1718
Tuesday – 10am
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Queen City Armory
102 S Wineow St, Cumberland, MD 21502
mon 9am
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LifeLine Firearms Training and Consulting
611 Hilltop Rd, Curtis Bay, MD 21226-1931
Damascus 1
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Eastern Armory
Domino's, 26437 Ridge Rd, Damascus, MD 20872-1939
friday 10am
Denton 1
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Black Anchor Armory
211 Market St, Denton, MD 21629
fri 10am
Edgewood 1
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Danielfam Firearms
810 Ermine Ct, Edgewood, MD 21040-1807
Elkton 1
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Dirty Barrels Armory
211 Thomas Jefferson Terrace, Elkton, MD 21921
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Oh My Gunz
19302 Elderberry Ter, Germantown, MD 20876-1638
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Red Hill Tactical
13024 Pennsylvania Ave, Hagerstown, MD 21742-2739
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Maryland 1st Armory
1005 S Main St, Hampstead, MD 21074-2241
Hanover 1
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Hanover Armory
1327 Ashton Rd, Hanover, MD 21076-3111
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S and S Guns
3252 Solomons Island Rd, Huntingtown, MD 20639
Mon 2:30pm-7:30pm, Tue-Wed 1:30pm-5:30pm, Thu 2:30pm-7:30pm
Keymar 1
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Lock Stock and Barrel
6510 Keysville Rd, Keymar, MD 21757-9508
Mon-Fri 1pm-7pm, Sat 10am-3:30pm
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Dynamic Weaponry
22227 Pee Wee Ln, Leonardtown, MD 20650-4022
Oakland 1
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Sharp Shooters
Mountain Lake Independent Baptist Church, 1005 Broadford Rd, Oakland, MD 21550-1404
fri: 10am
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United Gun Shop
5465 Randolph Rd, Rockville, MD 20852-2640
Tue 10am-7pm, Wed 10am-6pm, Thu 10am-7pm, Fri 10am-6pm, Sat 10am-3pm
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CC FIREARMS, CERAKOTE & GUNSMITHING
22024 Jefferson Blvd, Smithsburg, MD 21783
Mon 11am-7pm, Tue/Thu 2-7pm, Fri 10am-7pm, Sa
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Duffy's Gun Room
15433 Falls Rd, Sparks Glencoe, MD 21152-9589
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PSG Armory
32 Dalrymple Rd, Sunderland, MD 20689-3038
Tue-Sat 10am-7pm, Sun 10am-4pm
Waldorf 1
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Btp Arms
1282 Smallwood Dr W PMB 105, Waldorf, MD 20603-4732
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Geared Up Firearm Training Courses And Accessories, Inc.
19 N Court St, Westminster, MD 21157-5109
Also in Maryland
Good to know
What is a Class 3 gun dealer?
It's a dealer holding a Special Occupational Tax (SOT) status on top of their federal firearms license, which lets them legally sell NFA-regulated items like suppressors, short-barreled rifles, and machine guns. Not every gun store carries this license, since it adds extra paperwork, fees, and ATF oversight.
How long does it take to get an NFA item like a suppressor?
After you pass the background check and the dealer submits your ATF transfer paperwork, approval has historically ranged from a few months to close to a year depending on ATF processing volume. The item stays in the dealer's safe under your name until the transfer clears, so you can't take it home the same day.
How to register firearm?
Firearm registration requirements depend entirely on state and local laws, as federal law does not mandate a universal registry for standard handguns or long guns. In Maryland, specific transfer reporting or permit steps may apply when purchasing or importing a firearm. You can consult any of the 22 licensed FFL dealers in Maryland for current compliance guidelines.
Can you get a concealed carry permit online?
Some jurisdictions allow applicants to complete classroom instruction online, but physical range qualification or in-person application filing is often required. Regulations vary across Maryland, where specific state police or sheriff department criteria must be met. Check with local authorities or 22 registered FFLs across Maryland for official permit procedures.