STI 2011 9mm / 38 Super 120mm, 10 Round Magazine, Flush Fit for C2 Grip

The STI 2011 120mm 10 round magazine in 9mm and .38 Super is a factory magazine built to sit flush in 2011 pistols wearing the C2 grip. Fit matters enormously on a double stack 1911 pattern gun, where the magazine does structural work as well as feeding, and this one is dimensioned specifically for that clean flush profile. The result is the consistent lockup competition shooters expect every time they slam a reload home.

What this STI 2011 magazine is and who it is for

This is the purpose built unit for the C2 grip, not a full length competition tube trimmed to fit. Flush fit magazines exist because a carry or practical shooting setup needs the magazine to end where the grip ends, with nothing protruding to snag on a cover garment or a barricade.

The natural buyer is anyone running a C2 gripped pistol in a division or jurisdiction with a 10 round limit, along with shooters who simply want a tidy profile for practice and carry. It also suits owners who want spares that cover a caliber pair, since a single magazine handles both 9mm and .38 Super.

Features built into the design

Every choice in this magazine points back to durability and repeatable feeding.

• Manufactured from 410 stainless steel for a long service life
• Greater strength under hard use than softer magazine materials
• Better corrosion resistance against sweat, weather and range grime
• 120mm body length that sits flush with the C2 grip
• 10 round capacity in 9mm or .38 Super for limited divisions and restricted states
• Built to hold its geometry through thousands of load and unload cycles

Specifications and what the numbers deliver on an STI 2011

The body measures 120mm, capacity is 10 rounds, the material is 410 stainless steel and the fitment is a C2 gripped pistol with a flush profile. That material choice pays off three ways at once, giving longer service life, more strength under abuse, and real corrosion resistance for a magazine that spends its working life against a sweaty belt line.

Covering both 9mm and .38 Super in one magazine is a real convenience for owners who shoot a double stack 1911 in more than one chambering. The same spares support both guns, and that is one less part number to track in the range bag and one less thing to grab wrong on match morning.

Double stack 1911 magazines live a harder existence than most people appreciate. They are dropped loaded onto gravel and concrete stage after stage, and a tube that spreads even slightly at the lips will start nosing rounds into the feed ramp. The stainless body here is chosen precisely to resist that.

Practical use, care and compatibility

Confirm your grip before ordering, because flush fit is grip specific. A magazine cut for the C2 grip is exactly right in that frame and will sit differently in another, so match the part to the gun you actually own.

Care is simple. Disassemble occasionally, wipe the interior dry, inspect the spring for set and look hard at the feed lips after any hard landing. Leave the inside of the tube free of oil, since lubricant plus stage dust makes an abrasive paste that slows the follower.

Number your magazines and rotate them so a problem child can be identified and retired rather than quietly ruining a match. Magazines are the most failure prone part of any autoloading pistol, which is exactly why purpose built factory units matter, and why it is worth reviewing the rest of our competition and duty magazines while you are stocking up.

If you run a C2 grip STI 2011, this is the magazine designed for it, in the material and the length the job calls for. Ships direct to your door, no FFL required.