Episodes associated with manufacturers, training organizations, designers, distributors, and other professional entities discussed within the Primary & Secondary network.
- PHLster — Concealment systems, holster design, education, and applied concealment mechanics. Featured in P&S 159 — Degrees of Concealment with founder Jon Hauptman.
- Ridgeline Defense — Precision-rifle instruction, training, and applied rifle-system development. Featured in ModCast 403 — The Special Purpose Rifle and Fighting With Your SPR with co-founder Alex Hartmann.
- Reston Group Training — Firearms and tactical instruction led by Jared Reston. Featured with Ridgeline Defense in Fighting With Your SPR.
- Gideon Optics — Firearms-optics design and product development. Featured in ModCast 381 — Variables in RDS with Mike Branson.
- Dark Star Gear — Concealment-equipment design and holster manufacturing. Founder Tom Kelley joins the optics discussion in ModCast 381 — Variables in RDS.