The FFL's Guide to Selling Suppressors Without a Form 4
A compliance-first guide for FFL/SOT dealers on the 2026 NFA injunction, qualifying memberships, Form 4473, and no-Form-4 suppressor records.
FFL/SOTSuppressorsATF Form 4
SWP FIELD LAB // PUBLISHED ARTICLES
Research
Strategic Weapons and Preparation (SWP) performs regular research on tactics, firearms, and other equipment. While we perform additional research internally, our policy is to only publish research that cannot be useful to adversarial nations or individuals attempting to do harm.
6 published articles4 video articles2025—26 archive
LATEST FIRST
The research archive.
6.5 Grendel Bolts Explained - The Secret to 6 ARC, 22 ARC, and 338 ARC
SAAMI doesn't specify the 6.5 Grendel bolt face depth. We break down where the 0.136 inch Type II spec comes from, why ARC builds keep failing, and the correct bolt length and firing pin math.
6.5 GrendelGrendel Type IIBolt Face Depth
Faxon ION-X Ultralight 338 ARC Review
Faxon's ION-X Ultralight 338 ARC is a nightmare. We review Faxon's First 338 ARC, the ION-X 338 ARC, and find an AR pistol that fails to function whatsoever.
338 ARCFaxon ION-XFaxon 338 ARC
The Best 338 ARC: Diamondback DB-15 10.5" Review
Diamondback DB-15 338 ARC review. We review the new 338 ARC DB-15 from Diamondback Firearms. The DB15 338 ARC is a 10.5 inch pistol AR that is incredibly well built and reliable.
338 ARCDiamondback DB-15Diamondback DB15 338ARC
Chattahoochee Munitions CM10 8.6 Blackout 8" Pistol Review
We review the Chattahoochee Munitions CM10 8.6 Blackout 8 pistol, a premium 8.6BLK pistol from Georgia-based Chattahoochee Munitions.
8.6 BLK8.6 BlackoutChattahoochee Munitions
The Cheapest Short-barreled 8.6 Blackout
The cheapest 8.6 Blackout rifle on the market might be the Pro2A Patriot. Will this 8.6 BLK rifle prove to be a quality firearm?
8.6 BLK8.6 BlackoutPro2A Patriot