Mint condition FSR with less than 10h in the water (with optional 5th port) and XTX200 connected with an Apeks braided hose with 2 swivels (both at the first and second stage ends), plus Dive Rite bar SPG.

It's my favorite regulator for backmounted singles and twinsets:

• Over-balanced diaphragm design for superb performance at extreme depths
• Beefy forged body with four LP ports and two HP ports angled for optimal hose routing
• Environmentally sealed for exceptional cold water performance