My wife and I just got a new sling for our AR-15. We got a new Magpul MS3 with a Magpul ASAP Sling Plate. We got it at the LGS he installed the sling plate for free, I’m happy he did, because I would be still trying to install it and using such language that would wilt a sailors ears. He has also said he would completely break down our AR-15 or our Glock23, and give it a good deep cleaning and re-assemble it for just $10. He has also said he would let me watch, that way I can learn how to do it I this is knowledge I need to have.