[Enrico]

I purchased a single sling pin with loops and noticed that if I had to do a unexpected field strip I needed an Allen key to disassemble ...so, to have a chance of removing the screws in an emergency I replaced them with these type of screws (fillister tall cheese head). Chances are a flat head screw driver ( or something) is more available. Just my 2c

 

[850sub]

You should list the manufacturer for clarity.

 

[TonyN]

looks like button sling

 

[Enrico]

Yes it is a button sling and a good product, BUT this is a note for any specialty hardware that you need to deal with on the field in emergency.