Midwest Industries, Inc. has introduced their MCTAR-08HD (Heavy Duty) version of the MCTAR-08, their rail-mounted front sling adaptor for a QD sling swivel. The MCTAR-08HD is a beefier platform that engages more rail than the MCTAR-08. The best thing about it is that it limits the rotation of the QD sling swivel. The QD sling swivel will only turn about 20Â° after insertion. This prevents the sling from twisting around. Any QD sling swivel will work with the MCTAR-08HD. It’s shown here with the 1-1/4″ HD swivel.