Step 1: What you will need
100 feet of paracord
Step 2: Inner Strand
Step 3: Starting the weave
You will need roughly 1 foot of paracord for every inch of your sling. I ended up using a piece that was 40 feet long for the first weave. Measure your sling first and then figure out how much paracord you will need for this part. It should be around 40 feet.
Loop your long 40 foot piece on the mash hook just as you did your 4 foot piece. Then began a cobra weave. I'm not going to explain the cobra weave in detail. There are a ton of video resources for that on youtube and it is much easier to learn a knot from video then it is pictures in my opinion.
Step 4: Connecting the D-ring
Cut off the excess paracord and melt the ends with a lighter to prevent fraying.
Feel free to attach another hook at the rear end of the sling if you wish. I chose to just leave a loop on the end to loop the sling onto my single point sling adapter on my rifle.
Step 5: Starting the second weave (King Cobra)
Weave into the D-ring like you did on the first weave, making it nice and secure. Continue weaving until you reach the mash hook end. Be patient, it takes some time. Cut of the excess paracord and melt the ends.