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M-LOK Sling Thingy M-LOK Sling Thingy M-LOK Sling Thingy M-LOK Sling Thingy

M-LOK Sling Thingy

Run the 1-inch webbing sling you already chose straight off your M-LOK rail — no bulky, rattle-prone QD swivel required. A clean, lightweight attachment point that gets out of your way and stays put.

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Free Shipping $500+
Lifetime Warranty
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Made in USA

Free Shipping: Orders over $500 ship free.

Processing Time: In-stock items ship within 1-2 business days. Made-to-order items ship within 2-3 weeks.

Returns: We offer hassle-free returns within 14 days of delivery. Items must be unused and in original packaging.

You picked your sling for a reason. You should not have to bolt on a heavy, rattle-prone QD swivel just to run it. The M-LOK Sling Thingy gives you a clean, low-profile place to thread a 1-inch webbing sling directly onto your M-LOK rail — so your setup stays light, quiet, and exactly the way you want it.

A QD swivel adds weight, height, and a metal cup that clicks and rattles every time you move. If you are not swapping slings on the fly, you are hauling that hardware around for nothing. The Sling Thingy strips it back to what you actually need: a solid loop for your sling and a rock-steady mount for your rail.

How it works

  1. Mounts in one M-LOK slot. Includes the screw and T-nut — drop it in, snug it down, and it locks square to the rail.
  2. Threads a 1-inch webbing sling. The fixed 1" slot accepts most 1-inch flat nylon webbing slings. Loop it through, fold it back, and you are running your sling.
  3. Sits flush and quiet. No springs and no moving parts — nothing to rattle, snag, or wear out on you.

Built to take a beating

Made from a tough, impact-resistant nylon, the Sling Thingy shrugs off the knocks of range day and holds its shape in heat and cold. It is light enough to forget it is there, and strong enough to trust with the weight of your rifle.

Spec Detail
MountStandard M-LOK slot (screw & T-nut included)
Sling fit1-inch (25mm) flat nylon webbing slings
MaterialImpact-resistant nylon
AttachmentFixed (non-QD) — threads through a 1" slot
WeightFeatherweight (about 1.5 oz)
ColorBlack

Frequently Asked Questions

What is M-LOK, and will the Sling Thingy fit my rail?
M-LOK is the open-source modular mounting standard developed by Magpul, found on most modern handguards, forends, and stocks. The Sling Thingy bolts into a single standard M-LOK slot, so if your rifle has an open M-LOK slot, it fits.
What size sling does the Sling Thingy work with?
It is built around 1-inch (25mm) flat nylon webbing slings. Thread the webbing through the fixed slot and fold it back on itself to secure it. Slings wider than 1 inch will not pass through the slot.
Is 3D-printed PA12 strong enough to trust on a rifle?
Yes. PA12 is an industrial nylon used in automotive and aerospace parts for its impact resistance, flexibility, and durability. It handles the loads of carrying a slung rifle and resists the abrasion and temperature swings of regular range use.
How is this different from a QD (quick-detach) swivel?
A QD swivel uses a spring-loaded steel cup and socket so you can pop the sling on and off quickly, at the cost of added weight, height, and the occasional rattle. The Sling Thingy is a fixed mount: lighter, lower-profile, and silent, with no moving parts to wear out. The trade-off is that the sling stays threaded rather than detaching at the push of a button.
Does the Sling Thingy include mounting hardware?
Yes. Each one ships with the M-LOK screw and T-nut needed to mount it. All you need to install it is a hex key.

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M-LOK Sling Thingy

M-LOK Sling Thingy