I have a brand new Knight 209 Primer Extreme Conversion Kit 50 cal If you are looking at this, you know exactly what it is and why you want it. I ordered it for my Knight Bighorn and it went on backorder before it shipped. Ending up finding a used kit, so got that one. Didn't cancel my original order, so here it is. My loss is your gain. Pics are of the actual kit. Flat rate shipping to the US only of $6.00. This covers priority mail and delivery confirmation. Payment due with 48 hours of auction end.