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yes it is 1/2x28TPI see ******MODEL NUMBER: 21133 CALIBER: 22 LR StockBlack Synthetic Front SightNone Rear SightNone Barrel MaterialAlloy Steel Barrel Feature.920" Diameter, Threaded, Fluted ******Thread Pattern1/2"-28 Capacity10 Twist1:16" RH Barrel FinishSatin Black Overall Length34.62" Barrel Length16.12" Weight5.3 lb. Grooves6 UPC7-36676-21133-3 Suggested Retail$799.00

Hi Sean and welcome. Yes Sir, this model has a 16.12" Barrel with a Twist Rate of 1:16 and Threaded 1/2x28TPI. Cheers and stay safe!

StockBlack Synthetic
Front SightNone
Rear SightNone
Barrel MaterialAlloy Steel
Barrel Feature.920" Diameter, Threaded, Fluted
Thread Pattern-1/2"-28
Capacity10
Twist1:16" RH
Barrel FinishSatin Black
Overall Length34.62"
Barrel Length16.12"
Weight5.3 lb.
Grooves6

Hi Sean, yes sir, it is standard 1/2-28 Stay safe & have a great day!