OP 1664 - U.S. Explosive Ordnance (Vol. 1); Part 1 - Projectiles, Propellants, and Projectile Fuzes; Chapter 4 - Primers and Tracers; Section 2 - Primers: Percussion Primer Mk 21 Mods 0 and 1 (Obsolete)
File:Mk I and II percussion primer diagrams.jpg - Wikimedia Commons
Percussion Cap: Most Up-to-Date Encyclopedia, News & Reviews
Maynard tape primer - Wikipedia
Percussion Lock Muzzleloader
Forster Tap-O-Cap #11 Percusion Cap Maker
How does a percussion cap rifle work? - Quora
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Making my own musket percussion caps with this 1081 cap maker. Caps I was able to produce just great! : r/blackpowder
Percussion primers in military ammunition may be either rimfire (left)... | Download Scientific Diagram
Percussion Primers - Arsenal JSCo. - Bulgarian manufacturer of weapons and ammunition since 1878
The Beginners Guide To Muzzleloading | Part 4 | Muzzle-Loaders.com
Cabin Creek Battlefield - PERCUSSION CAPS The percussion cap is a small cylinder of copper or brass with one closed end. Inside the closed end is a small amount of a shock-sensitive
MKE MOD 51 (M82) Primer | MKE USA
Primer M82 Z | MSM GROUP
CCI Primers, Muzzleloader Precussion Caps & Musket Caps - #11, General-Purpose Percussion Cap For Most Rifles & Handguns, 100ct Pack. Reliable Gun: Firearms, Ammunition & Outdoor Gear in Canada