Is it worth it to you? How much are you into it? What is your intended use?
As for "safe" that could become a long argument. Some would argue that any firearm that's missing the parts necessary for it to operate in the manner it was designed, is unsafe. Others would say, just load the one barrel you wish to use, and enjoy. I tend toward the first. IMHO, half-assed functioning of firearms is an accident waiting to happen.
MSgt, USAF, Retired
NRA Life Member
The hardest thing to explain is the glaringly evident which everybody had decided not to see. - Ayn Rand