okay im sure this has been talked about before but i couldnt find anything on the matter. my question is it a Gen4 worth the extra money... ill go one step more and say im purchasing a Glock 27 for CCW... i plan on shooting at least 100 rounds a month threw this gun. it will not be a competition gun or anything like that. i just didnt know if what im using it for if i would need the larger mag release, back strap, texture, and different spring system. however i do plan on setting it up to shoot .357sig, 9mm, and possibly .22. i didnt know if the gen4 is easier to do this with or not. input would be great. thanks guys