Muzzle Brake Fitment and Contour Chart SKU + SIZE MM MODEL THREAD COLOUR CALIBRE SUGGESTED FIREARMS GTRG58 Round/TRG 5/8 x 24tpi Blued - up to 22mm .338Cal Suits Factory Tikka CTR - Tikka TAC A1 - Howa Varmint - Reminton Varmint GTRGS58 Round/TRG 5/8 x 24tpi Stainless - up to 22mm .338Cal Suits Factory Tikka CTR - Tikka TAC A1 - Howa Varmint - Reminton Varmint GTRGM18 Round/TRG M18 x 1P Blued - up to 22mm .338Cal Suits Factory Tikka Varmint - Sako Varmint - Blaser Varmint - Steyr Varmint - Bergara B14 Varmint GTRGSM18 Round/TRG M18 x 1P Stainless - up to 22mm .338Cal Suits Factory Tikka Varmint - Sako Varmint - Blaser Varmint - Steyr Varmint - Bergara B14 Varmint GTAC58 Square/TAC 5/8 x 24tpi Blued - up to 22mm .338Cal Suits Factory Tikka CTR - Tikka TAC A1 - Howa Varmint - Reminton Varmint GTACS58 Square/TAC 5/8 x 24tpi Stainless - up to 22mm .338Cal Suits Factory Tikka CTR - Tikka TAC A1 - Howa Varmint - Reminton Varmint GTACM18 Square/TAC M18 x 1P Blued - up to 22mm .338Cal Suits Factory Tikka Varmint - Sako Varmint - Blaser Varmint - Steyr Varmint - Bergara B14 Varmint GTACSM18 Square/TAC M18 x 1P Stainless - up to 22mm .338Cal Suits Factory Tikka Varmint - Sako Varmint - Blaser Varmint - Steyr Varmint - Bergara B14 Varmint GTACCOMM14 Squ/Compact M14 x 1P Blued - up to 18mm .338Cal Suits Factory Sauer Classic 100XT - Factory Tikka T3X - Franchi Horizon GTACSCOMM14 Squ/Compact M14 x 1P Stainless - up to 18mm .338Cal Suits Factory Sauer Classic 100XT - Factory Tikka T3X - Franchi Horizon GTACCOMM15 Squ/Compact M15 x 1P Blued - up to 18mm .338Cal Suits Factory Sauer 101 & 404 - Factory Sako 85 Carbon Wolf & Black Bear GTACSCOMM15 Squ/Compact M15 x 1P Stainless - up to 18mm .338Cal Suits Factory Sauer 101 & 404 - Factory Sako 85 Carbon Wolf & Black Bear www.winchesteraustralia.com.au SKU + SIZE MM MODEL THREAD COLOUR CALIBRE SUGGESTED FIREARMS GB14 Radial 1/2 x 24tpi Blued .30Cal Suits Ruger 77 - Winchester Model 70 - Steyr Pro Hunter profiles GBS14 Radial 1/2 x 24tpi Stainless .30Cal Suits Ruger 77 - Winchester Model 70 - Steyr Pro Hunter profiles GB14.3 Radial 7/16 x 28tpi Blued .30Cal Suits Factoiry Kimber Sporter GBS14.3 Radial 7/16 x 28tpi Stainless .30Cal Suits Factoiry Kimber Sporter GBS15.4 Radial M13 x 0.75P Stainless .30Cal Suits Factory Browning X Bolt Hell’s Canyon - .308Win, 30-06, 300WSM, 300WM GBS15.41.25 Radial M13 x 1.25P Stainless .30Cal Suits Factory Browning X-Bolt Hell’s Canyon - .243Win, 6.5 Creedmoor, 7mm-08, 270WSM, 7mm Rem Mag GB15.6 Radial 1/2 x 24tpi Blued .30Cal Suits Browning X-Bolt - Tikka T3X - Sako - CZ - Weatherby - Howa Sporter - Haenel GBS15.6 Radial 1/2 x 24tpi Stainless .30Cal Suits Browning X-Bolt - Tikka T3X - Sako - CZ - Weatherby - Howa Sporter - Haenel GB15.61 Radial 1/2 x 28tpi Blued .30Cal Suits Browning X-Bolt - Tikka T3X - Sako - CZ - Weatherby - Howa Sporter - Haenel GBS15.61 Radial 1/2 x 28tpi Stainless .30Cal Suits Browning X-Bolt - Tikka T3X - Sako - CZ - Weatherby - Howa Sporter - Haenel GB15.75 Radial 1/2 x 20tpi Blued .30Cal Suits Factory Webley & Scott or any of the above profiles GBS15.75 Radial 1/2 x 20tpi Stainless .30Cal Suits Factory Webley & Scott or any of the above profiles GB16 Radial 1/2 x 28tpi Blued .30Cal Suits Tikka T3 & T3X - Profiles GBS16 Radial 1/2 x 28tpi Stainless .30Cal Suits Tikka T3 & T3X - Profiles GB16.6 Radial 9/16 x 24tpi Blued .30Cal Suits Remington 7615 - Steyr Scout - Remington 700 - Bergara B14 sporter profiles GBS16.6 Radial 9/16 x 24tpi Stainless .30Cal Suits Remington 7615 - Steyr Scout - Remington 700 - Bergara B14 sporter profiles GB16.6M14 Radial M14 x 1P Blued .338Cal Suits Factory Sauer Classic 100XT - Factory Tikka T3X - Bergara B14 Sporter - Franchi Horizon GBS16.6M14 Radial M14 x 1P Stainless .338Cal Suits Factory Sauer Classic 100XT - Factory Tikka T3X - Bergara B14 Sporter - Franchi Horizon GB16.6M15 Radial M15 x 1P Blued .338Cal Suits Factory Sauer 101 & 404 - Factory Sako 85 Carbon Wolf & Black Bear GBS16.6M15 Radial M15 x 1P Stainless .338Cal Suits Factory Sauer 101 & 404 - Factory Sako 85 Carbon Wolf & Black Bear GB17 Radial M15 x 1P Matt Blued .30Cal Suits Blaser R8 - Merkel SR1 & R.X.Helix - Alpinist - Explorer - Sportster GB18.2 Radial 5/8 x 24tpi Matt Blued .30Cal Suits Factory Lithgow post 2018 models - .243 Win, 6.5 Creedmoor, .308 Win GBS18.2 Radial 5/8 x 24tpi Brushed Stainless .30Cal Suits Factory Lithgow post 2018 models - .243 Win, 6.5 Creedmoor, .308 Win GB18.21 Radial 1/2 x 28tpi Matt Blued .30Cal Suits Factory Lithgow post 2018 models - 17HMR, 22LR, 22WMR, .223Rem GBS18.21 Radial 1/2 x 28tpi Brushed Stainless .30Cal Suits Factory Lithgow post 2018 models - 17HMR, 22LR, 22WMR, .223Rem www.winchesteraustralia.com.au SKU + SIZE MM MODEL THREAD COLOUR CALIBRE SUGGESTED FIREARMS GB18.2M14 Radial M14 x 1P Matt Blued .30Cal Suits Factory Lithgow pre 2018 models - .223 Rem .243 Win, .308 Win GBS18.2M14 Radial M14 x 1P Brushed Stainless .30Cal Suits Factory Lithgow pre 2018 models - .223 Rem .243 Win, .308 Win GB18.5 Radial 5/8 x 24tpi Matt Blued .30Cal Suits Marlin Dark Series 30-30 GB19 Radial M17 x 1P Blued .30Cal Suits Factory Sauer Pantera GB19.1 Radial M15 x 1P Blued .30Cal Suits Factory Haenel Semi Varmint Sporter GBS19.1 Radial M15 x 1P Stainless .30Cal Suits Factory Haenel Semi Varmint Sporter GB20 Radial 5/8 x 24tpi Blued .30Cal Suits Factory Tikka CTR - Tikka TAC A1 GBS20 Radial 5/8 x 24tpi Stainless .30Cal Suits Factory Tikka CTR - Tikka TAC A1 GB20.20 Radial 11/16 x 24tpi Matt Blued .45Cal Suits Marlin Dark Series 45-70 GB20.7 Radial M18 x 1P Blued .30Cal Suits Steyr Varmint - Bergara B14 Varmint & other barrels with this Profile GBS20.7 Radial M18 x 1P Stainless .30Cal Suits Steyr Varmint - Bergara B14 Varmint & other barrels with this Profile GB21.65 Radial 5/8 x 24tpi Blued .30Cal Suits Factory Howa Varmint - Remington Varmint - Kimber Varmint & similar profiles GBS21.65 Radial 5/8 x 24tpi Stainless .30Cal Suits Factory Howa Varmint - Remington Varmint - Kimber Varmint & similar profiles GB22.1 Radial M18 x 1P Blued .30Cal Suits Factory Sako Varmint - Tikka Varmint - & similar profiles GBS22.1 Radial M18 x 1P Stainless .30Cal Suits Factory Sako Varmint - Tikka Varmint - & similar profiles GBS29 Radial 5/8 x 20tpi Stainless .30Cal Suits 29mm target match barrels which can be turned down to suit smaller barrels by a gunsmith GE12X28 Eliminator 1/2 x 28tpi Blued .22Cal Suits CZ 515, Ruger Precision, Savage models GEM14X1P Eliminator M14 x 1P Blued .30Cal Suits Tikka, Sauer 100XT, Bergara B14, Franchi Horizon, pre 2018 model Lithgow GESM14X1P Eliminator M14 x 1P Brushed Stainless .30Cal Suits Tikka, Sauer 100XT, Bergara B14, Franchi Horizon, pre 2018 model Lithgow Suits Sauer 101 and 104, Sako 85 Carbon Wolf, Sako 85 Black Wolf, Blaser R8 & R93, Haenel Semi Varmint GEM15X1P Eliminator M15 x 1P Blued .30Cal Sporter, Merkel Helix, Alpinist, Explorer, Sportster, Mauser M12 & M18 Suits Sauer 101 and 104, Sako 85 Carbon Wolf, Sako 85 Black Wolf, Blaser R8 & R93, Haenel Semi Varmint GESM15X1P Eliminator M15 x 1P Brushed Stainless .30Cal Sporter, Merkel Helix, Alpinist, Explorer, Sportster, Mauser M12 & M18 Suits universal fit for all firearms with a 5/8x24 tpi thread up to 23OD, including the following factory GE58X24 Eliminator 5/8 x 24tpi Blued .30Cal varmint rifles Howa, Remington, Kimber as well as Marlin Dark 30-30, Post 2018 Lithgow centre fire, Tikka CTR, TAC A1, Savage, Ruger and Bergara rifles Suits universal fit for all firearms with a 5/8x24 tpi thread up to 23OD, including the following factory GES58X24 Eliminator 5/8 x 24tpi Brushed Stainless .30Cal varmint rifles Howa, Remington, Kimber as well as Marlin Dark 30-30, Post 2018 Lithgow centre fire, Tikka CTR, TAC A1, Savage, Ruger and Bergara rifles www.winchesteraustralia.com.au.