I have an Israeli Arms Industries copy of the 30 Carbine. I bought it several years ago to have as a defensive rifle because it was much less exspensive than an AR 15/M4 style rifle. I was able to find several 20 and 30 round magazines for it at good prices and it seemed to meet my needs. I eventually was able to buy a Rock River Arms AR15 with hopes of getting into 3 Gun competitions and maybe taking a serious Rifle class or two but just never found the time and money to do it. The older I get the less likely I am to keep up with the "young guns" in classes or competition, so I sold my AR and have gone back to thinking of my little 30 Carbine as an adequate defensive rifle. I know many small LE agencies use them or at least did, as patrol rifles because of they're affordability. But I have not seen a lot of talk about using them in the capacity of a civilian fighting rifle. Worthwhile modifications, operating techniques, and training methods to get the most out of the gun. Anyone have any ideas?