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The KCI M1 Carbine 30-round magazine brings serious capacity to your .30 Carbine without the guesswork of aging surplus stock. Compared to original GI magazines from the 1940s, these modern Korean-made mags feature a robust design that actually improves on the originals. The steel body is heat-treated and electroplated to handle corrosion, while the high-tensile compression spring and bolt hold-open follower keep your rounds feeding smoothly from the first shot through the last.
These magazines work in both M1 and M2 Carbines, making them a solid choice whether you're building a tactical variant or bringing a warbird to the range. The bolt hold-open feature is a practical upgrade that the original mags never had, so you'll get visual and tactical feedback when you're down to the last round. Keep in mind that 30-round mags will be a touch loose in standard M1 mag wells, but they function reliably and many users just accept this as normal for extended capacity magazines.
The mag body is hardened steel with an electroplated black finish that resists rust and wear from repeated loading cycles. Spring material is high-carbon steel wire, and the follower is engineered to work with the bolt hold-open system. This is straightforward, no-frills construction that gets the job done. One thing to know: the feed lips can be sharp right out of the box, so take care when loading by hand or using stripper clips with the proper M1 carbine loader.
Range users consistently report solid feeding performance in dry conditions, and the magazine loads easily with standard ammunition. Some experienced shooters recommend not loading them completely to capacity if your carbine has any issues feeding, as running 20-25 rounds can eliminate occasional hiccups if your rifle's recoil spring needs attention. Keep your magazine clean after range sessions, especially in dusty conditions, and it'll keep running. The spring is strong enough that you might get a couple rounds popping out when unloading by hand, but that's a sign of good spring tension, not a defect.
Yes, it's designed for both M1 and M2 Carbines chambered in .30 Carbine. The main thing to know is that 30-round magazines will be slightly loose in a standard M1 mag well, which is normal for extended capacity mags. If you want a drop-free fit, the original 15-round capacity is typically tighter. Some carbines may benefit from an M2-style mag catch upgrade for more positive retention with 30-rounders.
KCI was actually the official supplier to South Korea when they used thousands of surplus M1 Carbines. The KCI mags improve on the originals with a fresh spring, hardened steel construction, and a bolt hold-open follower that the old GI mags didn't always have. Original magazines are 80 years old and often show wear, while these are built to modern standards. They're also a fraction of the price of unfired surplus stock.
Load these with standard .30 Carbine ammunition using either a stripper clip loader (with the correct M1 carbine spoon) or by hand. The feed lips can be sharp, so load from the top rather than the front to avoid thumb cuts. If you experience any feeding issues, try loading to 25 rounds instead of a full 30, or make sure your rifle's recoil spring is in good condition. Keep the magazine clean, especially after range use, and it'll run reliably.
Yes. The KCI includes a bolt hold-open follower, so the bolt will lock back on the last round. This is a practical feature that lets you know visually when you're empty and speeds up magazine changes. It's one of the improvements over original WWII-era magazines.
| UPC | 851586008252 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | KCI-MZ026 |
| Caliber/Gauge | .30 Carbine |
| Capacity | 30 |
| Color | Black |
| Length | 6.5000 |
| Model | |
| Product Type | Magazine |
| Quantity | 1 |
| Shipping Weight | 0.26 |
| State Restriction (CA) | NO DIRECT SHIP TO CALIFORNIA |
| State Restriction (IL) | NO SALE TO ILLINOIS PICA |
| State Restriction (OR) | NO SALE TO OREGON |
| State Restriction (RI) | NO DIRECT SHIP TO RHODE ISLAND |
| State Restriction (WA) | NO DIRECT SHIP TO WASHINGTON |
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