I have a VTAC padded and Magpul MS1 with QD's and without. Also have Frank Proctor's WOTG on one of my carbines and really like it. It is by far the lightest and simplistic IMHO. It is also the cheapest at only $29. After a lot of use though the 550 loops can start to fray while wrapped around the sharp edges of quad rails, but in three years I haven't broke one.

The VTAC really is rather large and complex compared to the simplicity of the other two. There is a lot going on there but it does work really well and is the most comfortable with heavier rifles. The heavy metal hardware will scratch the finish on your receivers over time though but it doesn't bother me.

The MS1 I use with QD's and it is built very well, really thicker and wider than the non-padded parts of the VTAC. The quick adjust slider is much larger than the WOTG. It's probably my new favorite. Magpul makes quality stuff.

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