Monstrum Tactical Sling Mount with Picatinny Rail Base

I was initially skeptical because of the price point, but this is really a great stout little mount. Fit my CDM gear 12ga barrel clamp perfectly and is about as low profile as I could get with this set up. I read in previous review this wouldn’t fit other sling swivels, but it fit my Magpul swivel perfectly with no issues (last pic). I’ve already ordered another one for a different gun.

Always a good fit.

Huge, built like a tank

Bought this to move my Slingster to the end of an Aero Precision Quad Rail. This seems to be a quality item, compared to the $30 and $40 alternatives. Once installed, I pulled as hard as I felt comfortable putting on the rail, and the swivel held. I had to use the supplied swivel - the one I had installed (that worked fine with the built in Aero socket) would pull out. But with the supplied swivel, it is solid. The inserted portion w/ ball bearings is longer than the one I had. For $10 and no-hassle return, I'd say give it a shot. Time will tell - will update if it fails.

In the triarchy of size, cost and strength, this give you heavy duty at a great price. It is a bit large and may not 'mesh' well with other high-speed low-drag operator gear on super small ultra tactical firearms. It does support my very heavy shotgun and feels as secure as secure gets. The pin and ball lock also feels very strong while rotating freely.

Worked well enough to convert my shotgun's sling from a single point to a 2 point configuration. Can't be used with other studs, as noted by other reviewers. This could be fixed by Monstrum pretty easily by simply machining the locking surface to a slightly larger size. It's hard to see from the photo but the sling swivel (the Oval, larger D ring) that came with the mount has slightly smaller ball bearings in the locking mount, and the cuts inside of the socket are sized accordingly. Standard sized QD studs (the D shaped one in the photo is a GG&G) will not fit the socket in the mount. The bearings on a standard swivel can't enter the channel so the plunger can engage. As a result, they pop right out with no resistance. The QD stud that came with it fits very well however, so there's that. Also, the bolts protruding out of the side of the clamp are pretty obnoxious. I have very limited rail space (I wouldn't even call the bits of picatinny bolted to my mag tube a "rail", but for this purpose) and the screw heads overhang into the space that other accessories would occupy, preventing things from being properly attached. The manufacturer could pretty easily improve this by simply countersinking the bolts like most higher quality mounts do. TLDR: For 10$, it will attach a sling swivel to your firearm. It's up to you to finagle it into a place where it won't interfere with other things. Won't work well if you swap your sling from firearm to firearm, as the mount and stud are not industry standard.

I was skeptical of the quality because of the price, but this is actually built really well, I especially like that there is two mounting screws, makes it less likely to loosen up over time.

This mount is well made and most importantly the swivel stays attached until you tell in not to. I bought one of the ones a couple of bucks cheaper,(probably visible below, just check their one star reviews) and the swivel would just pop right out with a bit of a jerk. Nothing that I would trust my build with. After that experience I severely tested this one, and it is rock solid. Avoid the POS mounts and get this one, you won't be disappointed.