Properly installed, your rear attachments/adapters should look as they do above.

To attach a stirrup type rear adapter, simply unfasten the adjustment strap, wrap the rear adapter around the buttstock, slide the adjustment strap tip through the loop, pull tight and fasten the hook and loop. You will need to readjust the tension a few times to remove any initial slack.

To attach a strap type rear adapter, simply unfasten the adapter strap and insert the tip through the upper stock slot from the off side. Run the tip over the sling. Insert the tip through the bottom stock slot and secure the strap with the tri-glide. Finish by doubling the tip back through the tri-glide. Note in the above image how the adapter strap is doubled back through the tri-glide. It’s critical that you do this when installing the sling. Otherwise, the strap may work loose. Excess attachment strap material on the rear adapter can be trimmed with scissors. The cut end will need to be sealed with a flame source such as a lighter.

For Tri-glide attachment to existing side sling loops or swivels your sling main strap instructions cover how to thread the sling through your attachment.