I just installed an FNH factory tri-rail, in place of the standard forend. I put a simple two-point sling on, using the buttstock slot on the rear, and a universal wire loop on the front (to keep the sling from geting in the way of the charging handle). An EoTech sits on top. This is a very handy "big pistol". It has gained my confidence to be my "near the front door" gun.