I have never heard of a Mk 16+, but it could be someone's name for a Mk 16 upgraded with Mk 17 guts.
I bought a pair of Mk 17 G250V's, kept one and gave the other one to Marci and use a G250 on the other post. I can't tell the difference underwater.
I bought a pair of Mk 17 G250V's, kept one and gave the other one to Marci and use a G250 on the other post. I can't tell the difference underwater.