I show how to install an AR-15 single-point sling attachment that doesn’t require the removal of the existing receiver end plate. This one just slides over the castle nut. This is handy if you’re not comfortable removing your buffer tube, or if your castle nut is pinned. It’s a cheap knock-off I got on eBay for $8.00. Probably not good enough for combat, but just fine for weekend warriors who just like to go to the gun range.