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2011 140mm 23rd Slidelock Magazines 9mm - 2011 140mm Dlc Slidelock Magazine Base Pad Blk 9mm
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$109.99
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SKU: 430103621
Overview
Built for high-capacity 2011 platforms, this Atlas Gunworks magazine is intended for shooters who want a 9mm option sized for modular grip double stacks. Its redesigned internal and upper tube dimensions, paired with a proper follower, are aimed at improving feeding and supporting reliable lockback. The 140mm version holds 21 rounds and is also offered in black DLC coated stainless steel, giving buyers a finish choice without changing the magazine’s core purpose. It is designed for use with modular grip double stacks in 9mm, .38 Super, and .38 Super Comp.
Why Hunters Choose the Atlas Gunworks
21-round Capacity
In the 140mm magazine format
Modular Grip
Double-stack 2011 platforms
Supports 9mm,
.38 Super, and .38 Super
Black Dlc
Coated stainless steel finish is
Redesigned Magazine
Dimensionally correct construction
Key Features
- Atlas Gunworks 2011 high-capacity magazine for 9mm platforms
- 140mm magazine capacity: 21 rounds
- Designed to work with modular grip double stacks in 9mm, .38 Super, and .38 Super Comp
- New internal dimensions are intended to improve feeding in double stack 2011s
- Upper tube dimensions and proper follower are designed to support reliable lockback
- Redesigned, dimensionally correct magazine body with +18% spring
Best Used For
- 2011 owners seeking a 140mm 9mm magazine for modular grip double-stack platforms
- Shooters using 9mm, .38 Super, or .38 Super Comp in compatible 2011 setups
- Users prioritizing reliable lockback in high-capacity double-stack magazines
- Range or competition shooters needing a 21-round magazine capacity
- Owners wanting a black DLC-coated stainless steel magazine option
Specifications
| 38 Super | Compatible |
|---|---|
| 38 Super Comp | Compatible |
| Available Finish Options | stainless steel and black DLC coated stainless steel |
| Base Pad | Black DLC slidelock magazine base pad |
| Blade Finish | Black DLC coated stainless steel |
| Body | Redesigned, dimensionally correct magazine body |
| Caliber | 9mm |
| Follower | Proper follower |
| Internal Dimensions | New internal dimensions |
| Lockback | Reliable lockback achievable |
| Magazine Capacity | 21 rounds |
| Magazine Length | 140mm |
| Platform | 2011 |
| Spring | +18% spring |
| Upper Tube Dimensions | New upper tube dimensions |
Pros
- 21-round capacity in the 140mm magazine format.
- Designed for modular grip double-stack 2011 platforms.
- Supports 9mm, .38 Super, and .38 Super Comp.
- Black DLC coated stainless steel finish is listed.
- Redesigned magazine body with dimensionally correct construction.
- +18% spring is specified for feed and lockback support.
Considerations & Trade-offs
- 140mm capacity is listed at 21 rounds, so it offers a compact high-capacity option rather than maximum round count.
- It is designed for modular grip double-stack 2011 platforms in 9mm, .38 Super, and .38 Super Comp, so fitment is specific to those setups.
- The black DLC version is a finish option on stainless steel, which may matter if you want a different appearance than the stainless version.
- The +18% spring and revised internal dimensions are intended to support feeding and lockback, but magazine performance still depends on the host pistol and setup.
Suggested Comparisons
- 2011 platform magazines
- High-capacity pistol magazines
- 9mm magazines
- .38 Super and .38 Super Comp magazines
Suggested Accessories
- Magazine pouch
- Speed loader
- Cleaning brush
- Spare magazine spring
Frequently Asked Questions
What pistols is this magazine designed to work with?
It is designed to work with modular grip double-stack 2011 platforms in 9mm, .38 Super, and .38 Super Comp.
What is the capacity of the 140mm version?
The 140mm magazine capacity is 21 rounds.
What finish is this specific magazine?
This product title identifies it as the black DLC-coated stainless steel version with a black base pad.
What changes does Atlas Gunworks say were made to improve function?
The product data says it has new internal dimensions, a redesigned dimensionally correct magazine body, upper tube dimensions paired with a proper follower, and a +18% spring for feed and lockback.
Is this magazine only for 9mm?
The product is listed as a 9mm magazine, and the description also says it is designed to work with modular grip double stacks in 9mm, .38 Super, and .38 Super Comp.