NFA item — $0 federal tax stamp. Order, we file the ATF Form 4 on eForms, you pick up at your SOT dealer after approval. Flat $14.99 firearm shipping.
Licensed FFL · Class 2 SOTWe file the Form 4$0 tax stamp
How the Form 4 process works
Transfers on an ATF Form 4 with a $0 federal tax stamp (as of Jan 1, 2026). We file the paperwork on eForms and keep you posted on status; you pick up at your SOT dealer with photo ID after ATF approval. How the Form 4 works →NFA & suppressor guide →
The FLOW 45 M prioritizes modularity. Your environments change your platforms change and your mission changes. Shoot it in full length for maximum suppression or switch to the compact K configuration when weight and speed matter most. With multiple mounting options the FLOW 45 M integrates seamlessly with your firearm without platform limitations. Finished in either C Series Black or FDE Cerakote the FLOW 45 M complements any firearm. In its full-size configuration it measures 8.5 inches and weighs 7.4 ounces; in the K configuration it measures 6.3 inches long and weighs 5.4 ounces. Extremely lightweight and remarkably durable the FLOW 45 M offers the ideal balance of performance reliability and modularity giving you the flexibility to tailor your suppressor to your exact needs. Full-Auto Rated The FLOW 45 M is full-auto rated for a magazine-fed .45 ACP platform. What s Included: Suppressor Suppressor Module External Thread Protector .578-28 Piston and Booster Assembly Wrench Specifications: WEIGHT WITH MODULE: 7.4oz WEIGHT WITHOUT MODULE: 5.4 LENGTH WITH MODULE: 8.5 IN LENGTH WITHOUT MODULE: 6.3 IN DIAMETER: 1.375 IN
