But not all M4 CQBRs have the crane stock, I mean the design in general, not special parts, for example, If I said M4, people could either refer to the E1 M4 with the regular stock or the systema M4 with the Crane Stock. But the CQBR is accually a good choise, and even if it didnt have a crane stock, It might be the most versitle. For me, I think it is the M4 System, because of all of its rails, and it is compact, but also it has great accuracy.