store.name JMJ Firearms LLC Hours, Reviews & Deals – Updated February 2026

FFL Licensed Dealer

JMJ Firearms LLC

4.6 (109 reviews)

29015 Three Notch Rd, MECHANICSVILLE, MD, 20659

About JMJ Firearms LLC

JMJ Firearms LLC is a licensed gun dealer in MECHANICSVILLE, MD.

Location & Hours

JMJ Firearms LLC

29015 Three Notch Rd, MECHANICSVILLE, MD, 20659

240-466-3066

View Store Directions

Store Hours

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Sunday

10:00 AM – 5:30 PM

Closed

10:00 AM – 5:30 PM

10:00 AM – 5:30 PM

10:00 AM – 5:00 PM

10:00 AM – 5:30 AM

Closed

Popular Hours

Popular visit times aren't available for this store yet.

Customer Reviews

109 reviews

Verified Reviewer

1 year ago

Officially my new gun store I will always go to. Been trying to get some work done on my gun and couldn't find someone. Recently jmj hosted a gun raffle that's how I found about them, So figured to give them a call. Arrived at 10am and left at 11am with my new iron sights and red dot installed with a gun cleaning. Quick, friendly and honestly a nice place to shop. Would recommend to try it out

Verified Reviewer

1 year ago

Great quality firearms, and outstanding customer service. As a Southern MD resident JMJ firearms provides the best experience as a consumer in the firearms market. John, I personally want to thank because he’s consistently providing positive energy, great conversation, & speedy responses to any inquiries I may have. ALL the JMJ staff deserve equal recognition! Keep up the great work guys! This proud customer approves!

Q&A

Do you take pistols/rifles for trade in for another firearm?

Answer: we buy used firearms

2 years ago

What are the Covid safety practices like here?

Answer: We follow Cdc guide lines

4 years ago

Products at JMJ Firearms LLC

12 products in stock

Ohio Ordnance Works, Inc, M2-SLR, Semi-automatic, Belt Fed Rifle, 50BMG, 20" Barrel, 1:12 Twist, Black Phosphate Finish, Includes (200) 50 Cal Links, Cleaning Kit, Headspace Gauge Set, Ruptred Case Extractor, Wrench, Custom Fitted Hard Case

Ohio Ordnance Works, Inc, M2-SLR, Semi-automatic, Belt Fed Rifle, 50BMG, 20" Barrel, 1:12 Twist, Black Phosphate Finish, Includes (200) 50 Cal Links, Cleaning Kit, Headspace Gauge Set, Ruptred Case Extractor, Wrench, Custom Fitted Hard Case

New Not In-Store Online

UPC:

-

Brand:

Ohio Ordnance Works, Inc

Model:

M2-SLR

Caliber:

50 BMG

Capacity:

-

JMJ Firearms LLC

4.6 (109)

$17,804.87

Ohio Ordnance Works, Inc, M240-SLR, 7.62NATO, 20" Barrel, Black Phosphate, 2,500 M13 Belt Links, Front Sight Combo Adjusting Tool, Cleaning Kit, Disassembly Tool, Custom Fitted Hard Case, Parts Pouch, 24.2 lbs

Ohio Ordnance Works, Inc, M240-SLR, 7.62NATO, 20" Barrel, Black Phosphate, 2,500 M13 Belt Links, Front Sight Combo Adjusting Tool, Cleaning Kit, Disassembly Tool, Custom Fitted Hard Case, Parts Pouch, 24.2 lbs

New Not In-Store Online

UPC:

-

Brand:

Ohio Ordnance Works, Inc

Model:

M240-SLR

Caliber:

.308 Winchester

Capacity:

-

JMJ Firearms LLC

4.6 (109)

$15,243.89

Barrett, M107A1, Semi-Automatic, 50 BMG, 29" Barrel, Flat Dark Earth Cerakote Finish, Synthetic Stock, Front/Rear Flip Sights, 10+1 Rounds, 1 Magazine, Bipod, Pelican Hard Case

Barrett, M107A1, Semi-Automatic, 50 BMG, 29" Barrel, Flat Dark Earth Cerakote Finish, Synthetic Stock, Front/Rear Flip Sights, 10+1 Rounds, 1 Magazine, Bipod, Pelican Hard Case

New Not In-Store Online

UPC:

Brand:

Barrett

Model:

M107A1

Caliber:

50 BMG

Capacity:

10

JMJ Firearms LLC

4.6 (109)

$14,764.63

Barrett, M107A1, Semi-Automatic, 50 BMG, 29" Barrel, Black, Cerakote Finish, Synthetic Stock, Front/Rear Flip Sights, 10+1 Rounds, 1 Magazine, Bipod, Pelican Hard Case

Barrett, M107A1, Semi-Automatic, 50 BMG, 29" Barrel, Black, Cerakote Finish, Synthetic Stock, Front/Rear Flip Sights, 10+1 Rounds, 1 Magazine, Bipod, Pelican Hard Case

New Not In-Store Online

UPC:

Brand:

Barrett

Model:

M107A1

Caliber:

50 BMG

Capacity:

10

JMJ Firearms LLC

4.6 (109)

$14,764.63

Barrett, M107A1, Semi-Automatic, 50 BMG, 20" Barrel, Gray Cerakote Finish, Synthetic Stock, Front/Rear Flip Sights, 10+1 Round, 1 Magazine, Bipod, Pelican Hard Case

Barrett, M107A1, Semi-Automatic, 50 BMG, 20" Barrel, Gray Cerakote Finish, Synthetic Stock, Front/Rear Flip Sights, 10+1 Round, 1 Magazine, Bipod, Pelican Hard Case

New Not In-Store Online

UPC:

Brand:

Barrett

Model:

M107A1

Caliber:

50 BMG

Capacity:

10

JMJ Firearms LLC

4.6 (109)

$14,764.09

Barrett, M107A1, Semi-Automatic, 50 BMG, 20" Barrel, Black Cerakote Finish, Synthetic Stock, Front/Rear Flip Sights, 10Rd, 1 Magazine, Bipod, Pelican Hard Case

Barrett, M107A1, Semi-Automatic, 50 BMG, 20" Barrel, Black Cerakote Finish, Synthetic Stock, Front/Rear Flip Sights, 10Rd, 1 Magazine, Bipod, Pelican Hard Case

New Not In-Store Online

UPC:

Brand:

Barrett

Model:

M107A1

Caliber:

50 BMG

Capacity:

10

JMJ Firearms LLC

4.6 (109)

$14,764.09

Barrett, M107A1, Semi-Automatic, 50 BMG, 29" Barrel, Gray Cerakote Finish, Synthetic Stock, Front/Rear Flip Sights, 10+1 Rounds, 1 Magazine, Bipod, Pelican Hard Case

Barrett, M107A1, Semi-Automatic, 50 BMG, 29" Barrel, Gray Cerakote Finish, Synthetic Stock, Front/Rear Flip Sights, 10+1 Rounds, 1 Magazine, Bipod, Pelican Hard Case

New Not In-Store Online

UPC:

Brand:

Barrett

Model:

M107A1

Caliber:

50 BMG

Capacity:

10

JMJ Firearms LLC

4.6 (109)

$14,764.09

Barrett, M107A1, Semi-Automatic, 50 BMG, 20" Barrel, Flat Dark Earth Cerakote Finish, Synthetic Stock, Front/Rear Flip Sights, 10+1 Rounds, 1 Magazine, Bipod, Pelican Hard Case

Barrett, M107A1, Semi-Automatic, 50 BMG, 20" Barrel, Flat Dark Earth Cerakote Finish, Synthetic Stock, Front/Rear Flip Sights, 10+1 Rounds, 1 Magazine, Bipod, Pelican Hard Case

New Not In-Store Online

UPC:

Brand:

Barrett

Model:

M107A1

Caliber:

50 BMG

Capacity:

10

JMJ Firearms LLC

4.6 (109)

$14,764.09

Rizzini USA Rhino Express Side by Side Rifle 470 Nitro Express 23" Barrel Coin Anodized Silver Oiled Turkish Walnut Double Gun Stock w/ Pistol Grip Stock Ambidextrous Hand

Rizzini USA Rhino Express Side by Side Rifle 470 Nitro Express 23" Barrel Coin Anodized Silver Oiled Turkish Walnut Double Gun Stock w/ Pistol Grip Stock Ambidextrous Hand

New Not In-Store Online

UPC:

Brand:

Rizzini

Model:

Rhino Express

Caliber:

470 Nitro Express

Capacity:

2

JMJ Firearms LLC

4.6 (109)

$14,400.94

Rizzini USA, Rhino Express, Side By Side, 500 Nitro Express, 23" Gloss Blued Barrel, Coin Anodized Silver Rec, Oiled Turkish Walnut Double Gun With Pistol Grip Stock, Ambidextrous Hand, 2 Rounds

Rizzini USA, Rhino Express, Side By Side, 500 Nitro Express, 23" Gloss Blued Barrel, Coin Anodized Silver Rec, Oiled Turkish Walnut Double Gun With Pistol Grip Stock, Ambidextrous Hand, 2 Rounds

New Not In-Store Online

UPC:

Brand:

Rizzini USA

Model:

Rhino Express

Caliber:

.500 Nitro Express 3"

Capacity:

2

JMJ Firearms LLC

4.6 (109)

$14,400.94

Barrett, MRAD MK22, Bolt Action Rifle, 300 Norma Mag, 26" Fluted Barrel, 1:8" Twist, 49.625" Overall Length, Coyote Brown Cerakote Finish, Synthetic Stock, 10 Rounds, 1 Magazine, Includes Contract Mount, Leupold 7-35x56 With T3 Reticle, Bipod Bag Rider

Barrett, MRAD MK22, Bolt Action Rifle, 300 Norma Mag, 26" Fluted Barrel, 1:8" Twist, 49.625" Overall Length, Coyote Brown Cerakote Finish, Synthetic Stock, 10 Rounds, 1 Magazine, Includes Contract Mount, Leupold 7-35x56 With T3 Reticle, Bipod Bag Rider

New Not In-Store Online

UPC:

Brand:

Barrett

Model:

MK22

Caliber:

.300 Norma Magnum

Capacity:

10

JMJ Firearms LLC

4.6 (109)

$12,205.88

B&T APR338 Bolt Action 338 Lapua 27" Threaded Barrel Black No Sights 10 Rounds

B&T APR338 Bolt Action 338 Lapua 27" Threaded Barrel Black No Sights 10 Rounds

New Not In-Store Online

UPC:

Brand:

B&T

Model:

APR338

Caliber:

338 Lapua Magnum

Capacity:

10

JMJ Firearms LLC

4.6 (109)

$11,368.11

View All Products at JMJ Firearms LLC

JMJ Firearms LLC - Store photo

Contact Information

29015 Three Notch Rd

MECHANICSVILLE, MD 20659

jmjfirearmsllc.com

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