PIG SMS (Swift Mechanical Support) Sling (Patented)

(5 reviews)
Current Stock:

PIG SMS Sling (Patented)

Currently, installation instructions are available only through our the Installation instructional video below- please view this video when installing.

Designed by a professional user who has been issued both 5.56 and 7.62 weapons during his career, the PIG Swift Mechanical Support (SMS) Sling gives you the best of both a Quick Adjust 2 point sling and a traditional loop sling that gives you a rock solid supported shooting platform. The Support Strap connects to a midway point on the rifle just forward of the action, and stays out of the way when the sling is used in 2 point carry mode. If you need to take a hasty sling-supported shot, simply thread your arm through the forward loop created by the front of the sling and the Support Strap, re-grasp the forend and touch your elbow to any solid contact point (such as your knee), and you are now shooting as solidly as you would in Prone or off of a Bench.

The SMS Sling is the ultimate solution for riflemen in both the hunting and tactical fields. The SMS Sling allows for all modes of carry used with a 2 Point Sling. Supported kneeling is one of the most versatile shooting positions when cover or terrain features will not allow for shots to be taken from the Prone, and the SMS sling takes kneeling to new heights of stability. By simply placing your elbow on any solid contact surface (such as your vehicle or wall) when your arm is threaded through the forward loop, you are locking your rifle into place and not merely resting it on top of something.

The SMS Sling is proudly Made in USA by PIG. 

You will need a sling mounting point for the Support Strap.

When used on an AR15 with a railed forend, we recommend any of the following sling mounts:

  • Sling Strap Width: 1"
  • Sling swivel (Loop) needed: 1"
  • Attachment hardware sold separately
  • Weight: 0.33 lb


  • 5
    Versatile and simple sling

    Posted by NR on 10th Apr 2020

    I've been using the SMS sling for 2 years on a 16" AR. My main use has been in local DMR matches and Run'N'Gun/Biathlon events. The ease of adjustment and usable shooting loop has made it incredibly useful. I much prefer it to my overpriced Vickers sling. Came here to buy another 2 or 3 for other rifles and saw they were out of stock. SKD , please get more of these!

  • 5
    Great Sling!

    Posted by BS on 3rd Dec 2017

    I'm constantly searching that perfect sling that can not only allow for tactical across-the-chest muzzle down carry but also be adjustable and have the ability to use as support for precision shooting. With this sling, I finally found it. My only negative is that I think the sling would be better if it was padded in the rear, the sling is only 1" thick and when looped around the neck is does dig in a bit. Besides that, this is one of the best slings I've ever used.

  • 5
    The Pointy Edge of the Sling Technology Spear

    Posted by Jake on 22nd Jul 2016

    The PIG SMS, is at its heart, a Ching Sling modified for 2-point tactical carry. This combination is brilliant, and once properly configured, extremely effective. The SMS stabilizes the shooter with ALL of the stability of a USGI web sling or M1907 sling. However, with the SMS, the shooter can "sling up" in mere seconds, avoiding the painfully slow process of setting up a USGI web loop or M1907 clips. When not in firing position, the sling keeps the rifle nice and snug on the chest. For these reasons, this design is - in this rifleman's opinion - a pinnacle. The only minor improvement I would suggest for the sling is incorporating a much larger quick release pull tab. The pull tab currently fitted is minuscule, and makes releasing the sling a challenging fumble under pressure. Overall, I could not more greatly stress the cleverness of this little sling. This sling is absolutely the best rifle support and carrying system I have ever encountered, by a very wide margin.

  • 4
    Good sling. Fiddly to get Adjusted.

    Posted by Paul McE on 6th Nov 2015

    Sling is for my wife. She's getting used to it, and figuring out the adjustments. Little too fiddly for my taste, but it seems to be conceptually sound. I was concerned about the front sling loop getting in the way, but it seems to be well-behaved.

  • 3
    work in progress?

    Posted by Kyle on 29th Jan 2015

    I really like the design of this sling, however the exicution seems weak. I intend to use it hunting, as such i feel like this sling could be easily damaged in dense undergrowth and ruff terrain. When compared to the Blue Force gear sling it just seems weak, which is to bad since the design works great! I'll have to be mean to it for a couple months and see how it holds up. Hope my initial impression was incorrect.