I have a whole pile of B&L Scopes, in various sizes. My Rem 700 Light Varmint .223 wears a 4-12 Elite, My TC Carbine in .17 Mach IV has a 4-12 also. Those scopes are tough too...my 7mm STW has a 4-16x50mm Elite 4200 that has held up fine after 300 + rounds, and one of my .445 Supermag contenders has taken about the same amount of pounding with a 4x B&L pistol scope. .. i have yet to tear one up, and in the last several years i've torn up several brands; but not a B&L. Altogether i have 11 B&L scopes, and i have enjoyed them all. Dont think you could go wrong with that scope..what caliber you gettin that carbine barrel in?