The M77 was retooled almost entirely and reintroduced in 1991 as the Mark II. The safety, bolt, and trigger were completely redesigned. The claw extractor was retained, but the bolt face was opened up to allow controlled-round feeding. The plunger ejector was replaced with a Mauser style blade ejector. Finally, a three-position safety allowed the bolt to be operated while the gun was still on safe, making unloading of the rifle less hazardous. Ruger also eliminated the adjustable trigger that came stock on the original M77.
Firearm Specifications
- Caliber: .30-06 Sprg
- Capacity: 4 Rounds
- Finish: Blued
- Stock: American Walnut
- Barrel Length: 22″
- Groove: 6
- Twist: 1:10″ RH
- Overall Length: 42 5/8″
- Weight: 7 1/2 lbs
- Front Sight: None
- Rear Sight: None
- Other Features: Three-Position Manual Safety

Ruger American Predator 17 HM2 Bolt-Action Rifle with OD Green Stock
Ruger American Rifle 270 Win Left-Handed Model
Ruger American 30-06 Bolt-Action Rifle with Multi-Scale Camo Finish
Ruger 77/44 44 Rem Mag Bolt-Action Rifle
Ruger American Predator 223 Rem Bolt-Action Rifle with Vortex Crossfire II 4-12x44mm Scope 

