CZ 455/457 LR (long rifle) WF (w/flutes), TH (.500 x 28 TPI threaded muzzle-end w/protective cap) Solid anodize .920 Barrel. Barrel interchangeable with the new CZ 457 model.

Match Chamber: loose or tight option: Loose - it will allow an extraction of a live round in the chamber. May or may not be as accurate as a tight chamber. Tight - inserting a live round will require a 1/8" push into the land leaving engraved marks on the lead bullet and align centerline to the bore. May not allow the extraction of a live round without shooting the round. There will be more accurate results.

Requires a scope and a bull barrel gunstock.

Gun Barrel Stock: 6061 high-quality aircraft aluminum

Barrel Length: 12.5" CZ barrels with threaded muzzle ends. Rifle liner runs the full length in barrels.

Standard Features: Barrel flutes (long one on top, 2 smaller ones on the sides and one on the bottom). 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: .22 LR Bentz Chamber - can use standard or match grade ammunition. Hyper-velocity ammo, such as CCI Stingers are not recommended.

Liner: 4140 Steel - Button rifled

.050 Thickness on LR & WMR (Magnum) liner, 6 groove

Rate of Twist: 1:16 - 22LR and WMR

1:9 - 22LR Sub-Sonic (40, 50, 60 grain ammo / accuracy range 25-50 yds.)

Caliber: . 22 Long Rifle

.22 WMR Magnum and Mach 2 as optional caliber by barrel selection on website

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