Rob Haversat — Founder, American Rifle Magazines
Rob Haversat has spent more than three decades in American manufacturing, and that background is the entire reason American Rifle Magazines exists.
Before American Rifle Magazines
Rob built his career in U.S. manufacturing from the factory floor up. He began at Sargent Manufacturing in New Haven, Connecticut, one of the country's foremost makers of architectural hardware — the kind of business where tolerances and finish quality are non-negotiable. In 1999 he co-founded Versat Group LLC, and in 2005 he acquired Pioneer Industries, a New Jersey manufacturer of commercial steel doors and frames, which he ran until 2012.
Today Rob is President and Owner of G&R Manufacturing in Naugatuck, Connecticut — the machine shop behind American Rifle Magazines. Every magazine ARM sells is engineered, tooled, and finished in that shop.
Why he started ARM
ARM was founded on a simple conviction: replacement magazines for Marlin and Remington rifles should be made in America, to original factory specifications, by people who actually understand how these rifles feed. ARM is not an importer or a reseller of overseas parts — every magazine is built in the U.S. from American steel and components, in Rob's own Naugatuck shop.
A tooling background, not a retail background
Because Rob comes from tooling and production rather than retail, ARM's magazines are built to the tolerances that matter: correct feed-lip geometry, proper spring pressure, and the exact fit that keeps an older Marlin or Remington 783 feeding the way it did off the factory line. When a customer isn't sure whether their rifle takes a 71900 or a 71903 magazine, or which Marlin model a rebadged Glenfield, JC Higgins, or Western Auto rifle actually maps to, that answer comes from someone who has machined the part — not a copywriter guessing from a parts catalog.
That's also why ARM's fitment guides are built as detailed model-by-model charts instead of vague "fits most Marlins" listings. See the Marlin fitment guide and the Remington 783 fitment guide for examples of the kind of detail Rob insists on.
Recognition
Rob has been recognized in the Marquis Who's Who registry for his work in manufacturing, and he writes ARM's rifle-magazine guides directly — the fitment charts, the capacity breakdowns, and the buying advice on this site come from him, not a content team with no shop floor experience.
The Naugatuck shop
G&R Manufacturing, Rob's shop in Naugatuck, Connecticut, is where every American Rifle Magazines product is engineered, tooled, and finished. It's the same shop, the same equipment, and the same people behind the door whether you're ordering one magazine for your own rifle or a wholesale order for a gun shop. That's a deliberate choice — Rob built ARM to be a manufacturer you can actually reach, not a brand sitting in front of an anonymous supply chain.
How Rob approaches fitment problems
Marlin's history in particular is full of rebrands, running changes, and lookalike models — the same rifle sold as a Marlin, a Glenfield, a JC Higgins, or a Western Auto depending on the store it shipped to. Rob's answer to that mess is the same one he'd give on a shop floor: identify the part by its actual dimensions and mechanism, not by the name stamped on the barrel. That's why ARM's magazines are cataloged by the specific Marlin models they fit rather than by store brand, and why the .22 WMR and .17 HMR magazines are built and sold as a shared magazine — the two cartridges use the same case dimensions, so one magazine body legitimately covers both.
What that means for you
When you order from American Rifle Magazines, you're not buying from a storefront that resells whatever a supplier sends them. You're buying a part designed and built by a manufacturer who has spent his career in tooling and production, and who still answers fitment questions personally. If your rifle is an odd rebrand, a pre-1996 model, or something you're not sure how to identify, that's exactly the kind of question Rob and the ARM team are set up to answer.
Why the founder's name is on the page
Most magazine listings you'll find online don't tell you who made the part or why you should trust it. ARM puts Rob's name and background on this site on purpose. If you're trying to figure out whether a 10-round Marlin .22 LR magazine is a legitimate factory option or an inferior knockoff, or whether your Remington 783's magnum long-action magazine is really a different part than the short-action version, the answer should come from someone who has actually built the tooling — not a listing written by someone who has never held the part.
Connect with Rob
Rob and the G&R Manufacturing team stand behind every magazine ARM ships. Reach out through our contact page, or connect with Rob on LinkedIn.
Shop what ARM builds
Browse Marlin .22 magazines or Remington 783 magazines, read the full About American Rifle Magazines page for the company story, or see wholesale purchasing if you're buying in volume.