1514 Winchester Ave
Martinsburg, WV 25405

1528 Winchester Ave, Unit 1
Martinsburg, WV 25405

30 minutes free training

for first-time customers

Majority Special

Turning 21? Enjoy our Birthday discount for 1st time firearm owners

Proud Sponsor

Berkeley County Deputy Sheriff’s Association

Gun Shop in Martinsburg

Green Monstah Firearms is West Virginia’s #1 Aero Precision dealer, carrying all the parts you need to build your dream gun in Martinsburg, WV.

AR Parts

We offer a large selection of parts. Order online here or visit us on location

Glock Parts

We offer a large selection of parts. Order online here or visit us on location

Martinsburg WV Gun Shop

Green Monstah Firearms, located in Martinsburg, WV, offers full gunsmithing services, FFL Transfers & More.


Our store caters to our customers with repairs and custom jobs by a master craftsman. Find out more!

FFL Transfers


AR10, AR15 , AR22

NATO Caliber

Aero precision

See our extensive collection




More than a store, we represent a hub geared to help and grow our community.

We are a pet and family friendly place, where experts and newcomers alike may pursue their passion in the most supportive environment.

We love lending a hand for local events and charity work.

We are West Viriginia’s #1 Aero Precision dealer.

We have all the parts you need to build the perfect rifle.


Green Monstah Firearms, LLC is here to assist you when you want to sell, trade, or consign. Whether it is one firearm or a whole collection, we are here to assist.

We will inspect your firearms, evaluate current market conditions and then present you with a value. We provide a professional retail location for you to bring your items in, there is no appointment necessary.

We regularly purchase firearms from our customers. You get paid instantly when we purchase your firearms, typically via check. You can also elect a store credit if you are interested in trading in your old firearm. Store credit helps you to fund that firearm you have had your eyes on! We love all types of pistol, rifles and shotguns. No firearm is to old or unusual! We love them all! We will find your “old” firearm a perfect home with a new enthusiast or collector.

Please give us a call at 304-816-4811 or stop by our Martinsburg, WV store with your firearms.


Green Monstah Firearms, located in Martinsburg, WV, Walk-in,call us or email us.

Contact Form Green Monstah

Top Rated Gun Shop in Martinsburg, West Virginia

Green Monstah Firearms, LLC is located at 1528 Winchester Ave, Martinsburg, WV. From Eastern West Virginia Regional Airport (MRB) head east on Aviation Way toward Airport Rd, and turn left onto Airport Rd, afterwards slight left onto Paynes Ford Rd. Finally, turn right onto US-11 N/Winchester Ave, and Green Monstah Firearms, LLC will be on the left.

We’re open: Monday-Saturday 10:00 – 18:00, Sunday 10:00 – 16:00

For additional questions, you can call us at (304) 816-4811 or find us on yelp.

Green Monstah Firearms

Green Monstah Firearms

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