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Building or buying a roller-delayed PCC can offer you a lot of flexibility that rifle-caliber builds just won’t. For one, a PCC will be shorter and more compact than most rifle-caliber builds (unless you are looking at the potential to build an ARP) and on top of that, handgun ammo is generally cheaper and produces less recoil […]

Our MRDS platform is exceptionally versatile, modular, and thanks to the platform’s numerous attachment points, incredibly expandable. With that being said, what an optimized roller-delayed PCC platform looks like depends on what your end goal is, be it law enforcement, competition, or just enjoying a day on the range. Fortunately, these platforms offer an endless number of

Congratulations on your purchase of the modern roller-delayed blowback system-powered (MRDS) ZF-56 rifle. Smooth-shooting, accurate, reliable, and built to industry-leading tolerances and specifications, the ZF-56 is a miracle of modern roller-delayed engineering. All the same, like all firearms, the ZF-56 will benefit immensely from routine cleaning. Here’s your primer on how to administer basic cleaning to the

Our MRDS platforms offer several significant advantages over AR-style platforms. They are smooth shooting, more reliable, have no gas system, have (generally) long-lasting components, and are entirely bufferless. We could go on with that, but for the time being, we want to give the spotlight to four of the platforms we’ve developed that are built around our

There are considerable advantages to building a pistol-caliber carbine, or PCC, that would be sufficient to fill an entire, dedicated article. With 9mm, also, you don’t need to rely on a gas system. Some AR pistol builds are bufferless and rely on direct blowback to cycle the action. This roller delayed PCC design has many advantages which

The vast, overwhelming majority of AR rifles and other modern sporting platforms rely on a gas system to operate their actions. As reliable and time-tested as a gas impingement action, or a gas piston action, can be, it is still important to recognize that this is not your only option. There are several alternatives, and

The ZF-5 and MP5 magazines we sell here at Zenith Firearms exhibit a high level of quality as well as several shooter-friendly features. As a result of their popularity, we rounded up some of the more common questions associated with these magazines and answered them here. See if your question is answered below and if not, feel

The MRDS platform that we’ve developed, the heart of which is a roller-delayed blowback system, is smooth-shooting, extremely reliable, suppresses well, and has relatively long-lived components because of its simplicity when compared to a traditional gas impingement system, such as that used by AR-15 rifles and similar platforms. With that said, as is the case for any

PCCs, or pistol-caliber carbines, are not rare. Roller-delayed PCCs, which rely on roller-delayed blowback operation as opposed to direct gas impingement, are. Most ARs and AR-style platforms use gas impingement, which requires a gas block, tube, a bolt carrier group with a gas key, and then a buffer system which consists of a tube that houses

Anyone who’s a fan of roller-delayed actions who is also interested in adding a PCC, or pistol caliber carbine to their collection, should look into our MRDS, or modern roller delayed system, as the perfect solution. Here’s your primer on our modern roller delayed PCC. Why a Pistol Caliber Carbine (PCC)? In a nutshell, a

Whether you shoot a ZF-5 or an actual HK MP 5, the truth is that these subguns are a little limited in terms of what attachments you can add, based just on the number of mounting points. The MP5 accessories and parts covered in this short post will help change that paradigm. Here are some

The HK MP5 doesn’t have much going on that could give you cause for complaint. The action is legendary and the compact footprint has proven indispensably effective in CQB encounters in the hands of law enforcement officials around the globe. Perhaps you could bemoan the price – the HK MP5 is famously expensive – but