M2 - .17 HM2 (Mach2) Chamber 1:9 Twist Rifling

CZ 455 LR (long rifle) NF (no flutes), TH (.500 x 28 TPI threaded muzzle-end w/protective cap) Solid anodize .920 Barrel. Barrel interchangeable with the new CZ 457 model. 

Gun Barrel Stock: 6061 high-quality aircraft aluminum

Barrel Length: 22" CZ barrels with threaded muzzle ends. Rifle liner runs the full length in barrels.

Standard Features: Barrel without flutes. Muzzle end 1/2" x 28 TPI threads with threaded protective cap.

Diameter: .920 Bull Barrel Style

Shank Size: .001 Oversized (may require minor hand fitting)

Chamber: M2 - .17 HM2 (Mach2) Chamber 1:9 Twist Rifling

Liner: 4140 Steel - Button rifled

Weight: Approximately 1 oz. per inch per length of the barrel