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 Modern Weapon Systems, A Top 100 Gunbroker Top Seller, we strive to give you world-class, friendly service, the best prices on around on both hard to find items and those you find everywhere. 

We offer a complete NFA Class 3 buying experience like no other.  We keep in stock a large supply of Silencers / Suppressors , Short Barrel Rifles , Short Barrel Shotguns , with the ability to get you the Machine Gun you may be looking for fun or investment. We make the whole NFA buying experience quick and easy with our in store Silencer Shop kiosk for NFA fingerprinting, transfers. With our vast knowledge of the complete process, we will not leave you wondering if you did everything right making a NFA purchase and completing the transfer process.

We also offer minor gunsmithing, laser engraving, including trigger jobs and more.  We manufacture several high quality parts for several unique firearms and standard firearms available to order directly on our website. 

Don't give up on finding the gun no one else has, don't waste time shopping around all over St. Louis for the best prices, give us a call first. Or visit the store for fast and friendly customer service every time, we do not treat any person differently based on race, sex, religion or sexual orientation and we are LGBTQ friendly. We can get most guns others cannot quickly and our prices usually beat any local gun shop easily. Come by, visit us today and see our small - but High Class showroom full of the newest and coolest guns everyday!

Modern Weapon Systems

300 Biltmore Dr. Ste 336
Fenton Mo 63026

Tuesday - Friday 10am-6pm
Saturday 10am-4pm

Phone: 314-252-0GUN or 314-252-0486


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