Complex sentence: The release cord may have a complex braid to add bulk to the end, this makes the knot easier to hold and the extra weight allows the loose end of a discharged sling to be recovered with a flick of the wrist.
Split into simpler sentences: The release cord may have a complex braid to add bulk to the end. This makes the knot easier to hold and the extra weight allows the loose end of a discharged sling to be recovered with a flick of the wrist.