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The ProMag RUG-A3 is a straight steel 30-round magazine built to feed .223 Remington and 5.56x45mm NATO ammunition in Ruger Mini-14 rifles. It's constructed with a heat-treated steel body and black oxide finish that resists corrosion in just about any environment. The magazine relies on a precision-molded polymer follower paired with a heat-treated chrome-silicon wire spring to move rounds into the chamber smoothly.
This steel magazine carries straightforward construction that keeps things simple when you need to reload. The design uses a tight magwell fit that requires your rifle's bolt open for magazine changes when fully loaded, which is common across Mini-14 30-round capacity mags. Load it down to 28 or 29 rounds if you prefer to keep the bolt closed during insertion.
Heat-treated steel construction withstands repeated use without deforming, and the black oxide finish defends against rust. The follower and spring combination keeps feed pressure consistent from the first round to the last. All components are sourced to deliver a magazine that works across standard Mini-14 platforms chambered in .223 or 5.56 NATO.
Extra magazines let you maximize trigger time without stopping to reload. The RUG-A3 serves well as a backup or replacement mag for practice sessions, ranch shooting, or general field work. ProMag backs every magazine with a lifetime guarantee against manufacturing defects, so you're covered on the construction side.
The RUG-A3 is designed for standard Mini-14 rifles chambered in .223 or 5.56 NATO. Fit and function can vary between different Mini-14 generations and series. Older models sometimes have tighter tolerances that may require the bolt open when inserting a fully loaded magazine. If you're using an earlier series rifle, load the mag to 28 or 29 rounds to keep the bolt closed during insertion.
Loading a full 30 rounds can make insertion tight with the bolt closed on most Mini-14s. Many users load 28 to 29 rounds instead for easier mag changes. The slight compression from leaving the mag loaded won't harm the spring or ammo over normal storage periods, and the brass will return to shape once fired.
The RUG-A3 uses a heat-treated steel body with black oxide finish, while the RUG-A4 features a polymer construction. Steel magazines tend to be more durable over time and resist warping, while polymer mags are lighter. Both hold 30 rounds and use the same spring-and-follower design principle.
ProMag stands behind the RUG-A3 with a lifetime guarantee against defects in workmanship and materials. If you experience a manufacturing issue, you can contact ProMag directly for a replacement. The warranty covers the original owner for the life of the magazine.
| UPC | 708279006395 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | RUG-A3 |
| Action | |
| Brand Fit | Ruger |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Capacity | 30 |
| Color | Black |
| Length | 7.6 |
| Model | |
| Model Fit | Mini-14 |
| Package Height | 2.0 |
| Package Width | 4.5 |
| Product Type | Accessory-Magazines |
| Quantity | 1 |
| Shipping Weight | 0.45 |
| State Restriction (CA) | NO DIRECT SHIP TO CALIFORNIA |
| State Restriction (IL) | NO SALE TO ILLINOIS PICA |
| State Restriction (RI) | NO DIRECT SHIP TO RHODE ISLAND |
| State Restriction (WA) | NO DIRECT SHIP TO WASHINGTON |
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