Depends on what your gonna do with it.
If you just want to make it a plinker then yeah theyre fun, but the atf will be breathing down your neck about it. If you want it for home defense than a carbine conversion is better and usually only 50$ more expensive.
I do not recommend them for conceal carry, too slow on the draw and too bulky to hide. And if you plan on keeping it in your car then a carbine conversion is better.