Might slip a couple LONG wire ties through the hand guard vents as well, handy for restrain BG while you call Police.
Becarefull with that restraining the bad guy. Aside from the tactical problems of restraint with a long gun or even making contact with a bad guy that is still breathing without back up. Your local laws might identify only law enforcement as authorized to restrain anybody in your jursidiction. In fact depending on where you live you can be charged with assault and battery for that restraint. Again depending on your local laws, the possiblity exsists that not only does the bast**d get off but can then turn around and sue you for violating his rights and the assault. If you have never contacted a good local attorney, I would make the suggesttion to do so and make sure you know your rights/the law where you live. Believe me it opened my eyes!!
And as for usefull suggestions for the rifle, a baseball bat holder attached to one of the rails. if you run out of ammo you can still crack the SOB upside his head. Also works as a large handle if your clumsy when you wake up!!