CZ-USA Model 527 American Suppressor-Ready “Mini Mauser”
Rifle|September - October 2021
Testing 7.62x39mm Loads
Patrick Meitin

CZ-USA’s 527 American Suppressor-Ready rifle includes a short, 16.5-inch barrel and a 5⁄8×24 threaded muzzle. These features allow adding a suppressor without turning the fast-handling carbine into something unwieldy.

CZ-USA’s single-set trigger allows shooters to adjust settings to their personal tastes, including pull weight (top front nut), creep (middle front) and overtravel (rear).

The action of CZ-USA’s 527 American Suppressor-Ready rifle is anchored by two bolts, the rear threading through the tang and a second located on the receiver flat just behind the recoil lug.

Added to the CZ-USA 527 rifle series in 2019, the Model 527 American Synthetic Suppressor-Ready, chambered in the 7.62x39mm Soviet, is a feathery and highly-maneuverable bolt-action carbine ideal for most hog- or deer-hunting scenarios involving moderate ranges. The 527 Suppressor-Ready (SR) would also provide an easy-handling rifle suited to small-framed hunters. Today’s popular 527 design began to evolve after World War II, influenced by waning military orders and a booming sporting market.

Famous firearms designers and twin brothers, Josef and František Koucký (originators of the renowned CZ 75 pistol) were tasked with designing a lightweight hunting rifle. Their ZKW 465 gained quick acceptance before undergoing several revisions until, in the 1980s, the first 527s were created. This Model 527 version includes an all-weather, “American-style” stock finished with sure-grip rubber and a 16.5-inch, 5⁄8×24 threaded barrel to accept a hearing-saving suppressor. Like other CZ bolt rifles chambered in 7.62x39mm, the 527 SR includes a chamber specifically designed to handle affordable, steel-cased ammunition. This includes a .310-caliber bore standard for that cartridge (.308-diameter bullets generally provide acceptable results, but 7.62x39mm .310-diameter projectiles have become available from most major makers.) and a 1:9.5-inch rifling twist.

The bolt release is a standard Mauser-style design, with a spring-loaded rocker button allowing slick removal of the bolt assembly for easier cleaning or bore inspection.

The sleek “mini Mauser” action found in CZ’s 527 series rifles produces a compact and streamlined package that has won the design many accolades.

Zachary Hein, CZ’s Marketing Communications and Suppressor product manager, worked behind the scenes, coaxing CZ-USA to bring this rifle to fruition. It is built on CZ’s smallest centerfire rifle, the award-winning 527 “mini Mauser” action designed specifically for small base, centerfire calibers and includes a strong claw extractor, detachable single-stack/ five-round steel magazine, 16.5inch cold-hammer-forged barrel and integral 16mm dovetail scope ring mounts. The 16.5-inch barrel makes the addition of a suppressor less burdensome in tight quarters, such as when used as a truck gun. Scope rings for 527-series rifles are a proprietary design with an integrated “recoil lug” on the rear ring base that corresponds to a milled indent in the dovetail “rail.”

Besides the 7.62x39mm under discussion here, the rifle is also available in popular .223 Remington, the 6.5 Grendel and the .300 AAC Blackout. Hein said he envisioned this model as a “do-itall survival and/or truck rifle to tackle any game up to medium size when chambered in 7.62x39mm or 6.5 Grendel.” The rifle is compact enough to comfortably strap to a backpack for hands-free hiking. Hein also pointed out that the rifle pairs well with the company’s lightweight 7.62 Ti Reflex suppressor and that CZ offers a Weaver-style rail adaptor for this rifle, allowing the addition of a thermal optic for nighttime hog or predator shooting.

Hein has used his own SR rifles to take a variety of big game, including an elk. This is what we termed a “ranch rifle” in my youth, a handy firearm that stays in a ranch truck while making the rounds, and was used to deal with coyotes molesting calves, a hog caught burrowing beneath a section fence or a badger undermining a stock tank. I could also see this rifle replacing a cowboy’s scabbarded levergun or serving the backcountry hunter.

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