Step 1: When propellant gases expand from the small barrel chamber into open air, the rapid pressure and temperature change creates the characteristic loud gun-blast sound.
Step 2: Supression: Silencers reduce the noise by giving gases a larger, contained space to dissipate and cool before exiting. Internal baffles (1) divide the silencer into various expansion chambers (2) for maximum efficiency.
Per the ATF eForm's FAQ, "A 'VOID' is requested when the Form has already been approved, but no transfer, Making, or Manufacturing has occurred. A 'Withdrawal' is requested when the Form is still p...
How to guide and walk-through guide for the ATF Form e5320.20 – ATF e5320.20 Application to Transport Interstate or to Temporarily Export Certain National Firearms Act (NFA) Firearms
Step By Step W...
The new ATF December 2025 version of the ATF Form 4 has been released with many changes. But it seems that new 2025 version has a typo that might be confusing. The typo that could cause confusio...