If you would like a 1 to 2 point sling system for the SLP, we just came out with one. Check us out on Facebook: http://www.facebook.com/AmericanFirearmsSolutionsLLC
We currently use the Magpul ASAP as our primary sling mount, but other sling mount options are available upon request. And we are working on a QD mount for the shotgun that mounts in the same way. This is a great addition to any SLP for competition use and can be left on when not needed as it barely adds any material to the stock.
Please e-mail Daniel Riordan at daniel.patrick.riordan@gmail.com for details and any questions you may have.