FAQ: Mesa Tactical Barrel and Magazine Clamps and Rails

Barrel and Magazine Clamps and Rails

My Remington 870 already has a magazine clamp that secures the two-round magazine extension to the 870’s barrel. Why would I need another one?

The Remington Magazine Clamp is OK for what it does, but it doesn’t offer you anything in the way of options. For instance, if you wanted to install a length of Picatinny Rail near the end of the barrel, you would have a hard time finding a means for attaching the rail at that location on a stock Remington 870. Our Magazine clamp, as shown in the above photo, at the top, not only replaces the Remington Magazine Clamp with a more robust version, but also provides you with several accessory mounting options. Most of those options can be used simultaneously. As an example, you can incorporate almost any two-point sling set-up, and at the same time install a Picatinny rail for mounting other accessories. The second photo shows one of the ways in which the Magazine Clamp can accommodate two accessories at the same time, and still leave the opposite side, which offers the same mounting capability, free for the addition of other accessories. In the above photo, on the right, note the H&K Hook Loop sandwiched under a short Picatinny rail. The shotgun is a Remington Police 870 with front sight and barrel porting courtesy Vang Comp Systems.

Can I use your Barrel or Magazine Clamp to mount a typical duty light on the barrel of my 870?

Yes, we actually have a couple of ways. Which way you choose may depend on whether your 870 has a an optional two-shot magazine extension, or just the standard four-shell magazine, and if your duty light has a one-inch diameter battery housing. If your 870 has just the four-shell magazine you can use our Magazine Clamp, which was intended to provide a very robust clamp between the barrel and the two-shell magazine extension, and also provides mounting points on each side for Picatinny rail and/or sling swivel attachments. In the absence of the two-shell magazine, the part that normally clamps to the magazine extension can be used as a flashlight holder, and works especially well with duty lights,

which do not provide a special bracket to attach the light to a Picatinny rail. The photo on the left shows the Magazine Clamp attached to an 870 barrel and a typical officer’s duty light. Note the unused holes, which are still available for mounting Picatinny rails, accessory sling loops, or quick-release push-button sling swivels. This particular method can still be used even if your 870 has the two-shell extension and you do not use the Magazine Clamp to clamp to the magazine. Another way to do it uses either the same Magazine Clamp, as it was originally intended, that is as a magazine clamp, or you can use our Barrel Clamp.

Then install a Short Picatinny rail to either clamp, and add a 1” scope ring with Picatinny mounting bracket to hold the duty light. However, the first way mentioned is the easiest, and is quite elegant in its simplicity. A third alternative also uses the Magazine Clamp with a short Picatinny rail, but requires the use of a weapon light with an integral mounting bracket that attaches to the Picatinny rail. The photo on the right shows this third alternative including a typical weapon light with integral mount for attaching the light to the Picatinny rail.

What’s the difference between a Picatinny rail and other rails?

A Picatinny rail is a widely accepted mounting device that is used to mount optical sights, and various other tactical accessories, predominately on military and law enforcement firearms. The Picatinny standard was developed at the US Army’s Picatinny Arsenal in New Jersey, and formally accepted at the so-called 1913 Picatinny Convention. The shape and dimensions of the teeth are defined in MIL-STD 1913. Picatinny rails are similar, but not identical, to Weaver and some other rails commonly found on hunting rifles. Picatinny rails, on the other hand, are seen most often on military equipment, where universal specifications are required to assure interchageabiliy between various products. All of Mesa Tactical’s rails are manufactured in compliance with the Picatinny standards, and most manufacturers are building their optical sights and other rail mounted tactical accessories for use with rails that do, in fact, comply with the Picatinny standards.