SJ Hardware USA offers a systems-driven look at how the company is refining and reintroducing ideas that already proved themselves more than three decades ago, then updating and bringing them into the present with better materials and smarter execution.

At the center of the conversation is SJ’s MCS (Modular Combat Shotgun) system, a concept that originally came about roughly 30 years ago and has now been quietly resurrected without much fanfare.

Watch here: Inside SJ Hardware USA’s Modular Shotgun Systems

The idea is straightforward: turn the shotgun into something modular, adaptable, and easier to configure without committing to permanent changes unless you actually want them. Front-end breaching setups can be added via multiple mounting options, including drop-in and gunsmith-installed solutions, giving users flexibility instead of forcing them into a single “correct” build.

SJ Hardware’s modular logic carries over to the rear of the gun as well. The MCS baseplate allows for quick interchangeability at the stock end, using a simple pin system that lets users swap configurations depending on what they’re doing. Breach, stow, reconfigure, move on. It’s functional and unapologetically utilitarian.

Modular Shotgun Gear Without the Nonsense

Beyond the shotgun itself, SJ Hardware also offers a broader support gear ecosystem. Their shell cards stand out not because they’re flashy, but because they’re boring in the best way possible. By using Tegris as a rigid backer, the cards resist sagging, flexing, and premature failure… all the stuff that happens after thousands of on-and-off cycles in the real world. 

Needless to say, it’s pretty clear that longevity is the design goal here.

The same thinking is applied to their micro rig and placard systems, which are clearly built to adapt to your specific needs rather than dictate how they’re used. Shotgun-focused, yes, but intentionally flexible enough to carry M4 mags, ammo, or whatever problem the day presents.

Regardless, check ‘em out online for the full lineup of MCS parts and modular shotgunner gear.