Dennis, no Sir. All Magnum Lite barrels have an 11-degree crown. This model features a patented graphite barrel, unique to MRI, which provides lighter weight, better heat disposition than steel, and is extremely stiff. Some good details on the rifle here : youtube.com/watch?v=KRLGO9lVHi8

No sir,
I'd check with these guys as they can thread most barrels for around $100
barrelthreading.com/

NO, it DOES NOT. (Specifications and Features): - Magnum Research Magnum Lite MLR-1722WMH Semi Automatic Rimfire Rifle - .22 Winchester Magnum Rimfire - 19" graphite barrel with steel liner - 9 round magazine (uses standard Ruger 10/22 - Magnum Mags) - Custom anodized receiver with "French grey" finish - Black rubber OverMolded Hogue stock - Integral scope base - 38" overall length - 5 lbs unloaded.