Incredibly friendly staff; although I didn’t purchase a firearm with them (yet), they were incredibly helpful and willing to help me with my red dot mounting issues — free of charge.
November 2023
Awesome shop, people, and selection. Extremely friendly
July 2023
Very knowledgeable, very kind, and has a huge selection of things. At a minimum one of the coolest gun stores in Saint Louis. Exactly what a modern gun store should be
At Modern Weapon Systems, we strive to give you world-class service, the best prices from a gun store / gun shop in Jefferson County. We offer a HUGE selection of AR15 build parts, amazing selection of top tier weapons, complete NFA Class 3 buying experience like no other. We are a silencer shop dealer & keep in stock, NFA products, making the whole NFA process easy. We offer minor gunsmithing, laser engraving, & more. We manufacture several high quality parts for several unique firearms & we can order anything and get a lot of the guns no one else has, don't waste time shopping around all over St. Louis for the best prices, give us a call first, for the best VALUE & great gun store or gun shop experience visit Modern Weapon Systems FIRST.
