I have a pre-ban PWA lower (well used) I would like to refinish it along with my upper. Will this lower its value?

It will lose its value if it looks ugly when you are done.

No, it won't lower the value.  It's not a collector grade weapon.  If you get it done right it would increase its marketability to prospective buyers.

Can you recommend anyone who would do a good , professional job?

Posted by gungoat34...

Can you recommend anyone who would do a good , professional job?

Only the best...Walter Birdsong

only if you use gungoat.

Quoted: Posted by gungoat34... Can you recommend anyone who would do a good , professional job? Only the best...Walter Birdsong

I don't have any experience w/ Birdsong products, but someone else here recently opined that Black-T isn't very tough, & that it flakes off rather easily.

Blaster, who ever said that Black-T "flakes off" is 100% dead wrong!  

Walter has told me of a test that he has conducted on his finish... He finished an old shotgun barrel in Black-T, put it in a vise, inserted a fulcrum into the barrel, and proceeded to bend the barrel every which way until it looked more like a pretzel than a gun barrel.  

Guess what... the finished never cracked or flaked!!!

As for Black-T not wearing well, any gun finish will wear over time and with use. Black-T is no exception.

But... if & when Birdsong prefects his "Ceramic-T", it will usher in a whole new era of extremely durable firearms finishes!

Walter Birdsong's contact info is in the link that I posted.  Anyone interested in Black-T should give him a call.  He will be more than happy to tell you about his finishes.  

Purely from a collector standpoint, yes, it will lower the value. As others mention there's little, if any collector value so the price difference may be miniscule at worst.

Lauer custom weaponry does a great job.
Also scott bell does great with the norrel moly.

Quoted: ... put it in a vise, inserted a fulcrum into the barrel, and proceeded to bend the barrel every which way ...

ok, i ain't the grammar poleeece, but, wouldn't the vise be the fulcrum, and the barrel itself the lever, simply being extended by whatever was inserted into it to provide a greater mechanical advantage?

physics patrol!