Benelli Crio/Crio Plus (Flush choke is 2.75″ w/threads 3/4″ from top) –
Interchanges with Carlson’s Crio/Crio Plus (Super Black Eagle 2 & 3, M-2, Vinci, Ultra Light and current Sport II, Super Sport, Cordoba, Montefeltro, & 828U)

Benelli (older models imported by HK) - No known interchange

Benelli Crio (Flush choke is 2.75″ long w/threads at top) –
No longer being used– limited use in Sport II and SuperSport and Cordoba produced prior to 2006

Benelli Mobil (Flush choke is 2″ with threads at top) –
Interchanges with Carlson’s Beretta/Benelli Mobil style threads (SBE I, Nova & Super Nova, M-4, Ethos, Legacy, Montefeltro made prior to 2007)

Beretta Mobil (Flush choke is 2″ w/threads at top) –
Interchanges with Beretta/Benelli Mobil style threads (A-300 Outlander, all 390, 686 Silver Pigeon I, II, III, & V, 687 EELL Diamond Pigeon

Beretta Optima (Flush choke is 2.75″ with threads at top) –
Interchanges with Carlson’s Optima threads (Models 391A Extrema, 391 Urika 2, DT-10, 682 Gold 391 Teknys, Silver Pigeon II & III)

Beretta Optima HP (Flush choke is 2.75″ w/threads less than 1/2″ from top of choke) –
Interchanges with Optima HP style threads (SV10 Perennia, SV10 Prevail, A400 Xplor, Mod. 1301 & UGB25)

Beretta Optima Plus (Flush choke is 2.75″ with threads 3/4″ down from top of choke) –
Interchanges with Optima Plus style threads (Models 391A Extrema and 12ga. 391 Teknys TX4)

Browning Invector (Flush choke is 1.5″ long w/threads at bottom) –
Interchanges with Winchester, Browning Invector & Mossberg 500 style threads

Browning Invector DS (Flush choke is 3.1″ long w/threads at top) –
Interchanges with Browning Invector DS (2013 A5, 725 Citori)

Browning Invector Plus (Flush mount choke is 2.4″ long w/threads at bottom) –
Interchanges with Carlson’s Browning Invector Plus (Winchester SX2, SX3, & SXP, New Supreme & 101 models, Browning Maxus, Gold Hunter, Silver, White Lightning)

Remington Choke (Rem Choke) (Flush choke is 2″ long w/threads at bottom) –
Interchanges with Remington style threads (870, 887, 11-87, 1100 & V3)

Remington Pro Bore (Flush choke is 2″ w/threads at top) –
Interchanges with Pro Bore style threads (105CTi, G3, All Parker Models, New 1100 Competition, Premier O/U, Versa Max, 870 Bone Collector)

Remington Spartan (Flush choke is 1.5″ w/threads at bottom) –
Interchanges with standard Tru-Choke style threads (SPR or Spartan models

Winchester (1200, 1300, 1400, 1500, & Ranger) –
Interchanges with Winchester, Browning Invector & Mossberg 500 style threads

Winchester 101 (New Model) –
Interchanges with Carlson’s Browning Invector Plus style threads

Winchester Model 59 - No known interchange

Winchester Select Energy –
Interchanges with Carlson’s Browning Invector Plus style threads

Winchester SXP, SX2, SX3, SX4, New Supreme & 101 models –
Interchanges with Carlson’s Browning Invector Plus style threads