Lwrc wants a fortune for a rebarrel and they don’t sell gas blocks as a separate part. I have an spr piston upper but would really like to get an ic-e or a5 barrel or gas block so I can use the adjustable gas block when shooting suppressed. Does anyone know of any place that I might find one or both of those items or is my best bet trying the px here with a want to buy add or ponying up and paying the 600 to have lwrc do the rebarrel?