Modern Weapon Systems
Modern Weapon Systems in Fenton operates as a specialized firearms retailer focused on hard-to-find parts, NFA items, and complete suppressor solutions. Their in-store SilencerShop kiosk system eliminates the hassle of NFA transfers—fingerprinting happens on-site, ATF-approved, with current Form 4 a...
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Business Details
Full description and what we offer
Modern Weapon Systems in Fenton operates as a specialized firearms retailer focused on hard-to-find parts, NFA items, and complete suppressor solutions. Their in-store SilencerShop kiosk system eliminates the hassle of NFA transfers—fingerprinting happens on-site, ATF-approved, with current Form 4 approval times averaging 1 week.
Their inventory spans several categories:
AR Platform Parts - Melonite BCG carriers for AR-15 (5.56) and AR-10 (308/6.5 Creedmoor) - Barrels, gas blocks, muzzle devices, and sling mounts - Pricing: AR-15 BCGs from $99.99, AR-10 units from $199.99
Pistol-Specific Components - Sphinx SDP parts (trigger kits, fiber optic sights in green/red) - Laugo Alien magwells and parts - Masterpiece Arms MAC 10 clone components - Zastava and CAI Draco/Micro Draco adapters
NFA Items & Suppressors - In-stock brands: Huxwrx/OSS, SilencerCo, Advanced Armament Corp (AAC), Q, Dead Air, SIG Sauer, Barrett, and others - Short-barreled rifles (Daniel Defense, Colt, SIG Sauer, B&T, Kriss) - Short-barreled shotguns (Mossberg, SIG Sauer) - Machine gun sourcing (pre-1986 registered) - AOW transfers
"NFA times for approvals are currently less than 1 week."
Once you complete the SilencerShop kiosk fingerprinting process, your biometrics are stored for up to 2 years—no need to repeat it for future transfers. Transfer fees:
| Item Type | Transfer Fee | Kiosk Fee | Tax Stamp |
|---|---|---|---|
| Silencers/Suppressors | $100 | $50 | $200 |
| SBR/SBS | $100 | $50 | $200 |
| Machine Guns | $200 | $50 | $200 |
| AOW | $100 | $50 | $5 |
They prioritize flow-through suppression technology—the same units used by military Spec Ops, Navy, Marines, Army, and FBI. The benefits over traditional baffled suppressors: - Keeps your gun cleaner - Lowers volume at shooter's ears - Eliminates toxic gases away from your face - Prevents gas regulation issues and heat damage - No debris enters the weapon system
- •Laser engraving available
- •Apparel: SR branded hats and clothing, patches, coffee mugs/tumblers
- •Online platforms: Listings on GunBroker and Armslist
Modern Weapon Systems
300 Biltmore Drive, Suite 336 Fenton, MO 63026 (Just outside St. Louis, next to Chuck's Boots in Jefferson County)
- •Phone: 314-252-0486
If you pass a standard 4473 background check, you'll pass the Form 4 check. The kiosk system speeds up the entire process—no delays, no transfer issues.