BudsGunShop.com - Choke tube thread pattern

Hi Briton, It is Win Choke Compatible. Stevens 301 Single Shot comes with a Modified Choke, If you feel you want to adjust the pattern go right ahead and install any compatible Win Choke thread pitch aftermarket chokes.

This shotgun has a Removable Modified Choke and uses standard Win-Choke screw in chokes. (Specifications and Features): - Savage Stevens 301 Single Shot Shotgun 22557 - Single Shot Break Action - 12 Gauge - 26" Carbon Steel Barrel - 3" Chamber (Accepts 2-3/4" and 3" Shells) - Singe Shot - Bead Sight - Synthetic Stock - Synthetic Forend - Removable Modified Choke - Win Choke Compatible - Overall Length 41" - Overall Weight 5.6lbs - Matte Black.

Win-Choke®-style: .812"-32 tpi (12 ga.) Carlsons will work.--
budsgunshop.com/catalog/product_info.php/products_id/713071868/CARLSONS+CHOKE+TUBE+12GA.

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