POC-S Nipple: .225-32 thread ~antique Colt, Remington, or Savage revolvers~ No. 11 CCI cap, stainless steel

PRA-S Nipple: 12-28 thread ~Ruger Old Army revolver~ No. 11 CCI cap, stainless steel

PST-S Nipple: 1/4-28 thread ~short factory replica for Thompson Center rifles~ No. 11 CCI cap, stainless steel

PST-SE-CA-S Nipple: 1/4-28 thread ~Classic Arms "Snake Eyes" & Hoppe's "Ethan Allen" pistol~ No.11 CCI cap, stainless steel

PTC-NS Nipple: 12-28 thread ~early Pocket Revolvers~ No. 11 CCI cap, stainless steel

PTC-PI Nipple: 12-28 aka 5.5-.9mm metric thread ~many Uberti revolvers, most brands of pocket revolvers, Colt 2nd & 3rd Generation revolvers~ No. 11 CCI cap, hardened steel

PTC-PS Nipple: 12-28 aka 5.5-.9mm metric thread ~many Uberti revolvers, most brands of pocket revolvers, Colt 2nd & 3rd Generation revolvers~ No. 11 CCI cap, stainless steel

PTC-S Nipple: 12-28 thread~Thompson Center Seneca & Cherokee rifles, and Patriot pistol~ No. 11 CCI cap, stainless steel

RLGP-S Nipple: 6-.75mm metric thread ~Investarm Gemmer, Bridger, Cabela's Hawken & Lyman Great Plains, Deerstalker, Trade Rifle~ No. 11 CCI cap, stainless steel

RLP-MS Nipple: 6-.75mm metric thread ~Investarm Gemmer, Bridger, Cabela's Hawken & Lyman Great Plains, Deerstalker, Trade Rifle~ musket cap, stainless steel