Burris Burris Ruger M77 Gloss Black Scope Mount Rings. PreviousBurris 2nd Gen "Flat" Extension Front Standard Rear Rings. Matte Black. 1". NextBurris Medium Extension Rear Only. New Old Stock. 420061. Burris Ruger M77 Gloss Black Scope Mount Rings. Burris Ruger M77 Gloss Black Scope Mount Rings. $49.00 Size/Height/Style: Select Size/Height/Style 1" Low Standard Front Extension rear; 42010130mm Standard Front Standard Rear; 4203001" Standard Front Standard Rear 77V Varmint; 420102 1" Low Standard Front Extension rear; 420101 30mm Standard Front Standard Rear; 420300 1" Standard Front Standard Rear 77V Varmint; 420102 Quantity: Get notified by email when this product is in stock. Sign up to receive news and updates. Add To Cart Facebook0 Twitter Pinterest0