what kind of p90 sling is that? It looks like its hard to shoulder it, like you need to disengage one of the Caribbeaners. Im using a HST p90 sling-
http://www.arniesairsoft.co.uk/?filn...hst_review.htm
I find it very nice, and weapon transition is extremely fast, however, id rather have the p90 closely secured to my chest.