Description
The Geissele Super Stainless Mag Catch (SSMC) is one of those small AR-15 parts that punches above its size. It's a direct replacement for the mil-spec magazine catch, machined from stainless steel so it holds up better against wear and shrugs off rust and corrosion over the long haul. This is the same catch Geissele uses in their Super Duty and Ultra Duty Lower Parts Kits, so you're getting a piece that already lives on some of their best builds.
What the Super Stainless Mag Catch Fixes on Your AR
If you've ever noticed your magazine wobbling around a little after it seats, that's the play a tighter mag catch helps clean up. Folks who've swapped this one in report noticeably better mag fit with less of the slop you get from a loose mil-spec catch, while the mag still drops free the way it should. The spring feels a touch firmer too, which gives you a more positive, confident lockup. It also plays nice with popular extended mag releases like the BAD lever if you run one.
Installing the SSMC Mag Catch
There's no learning curve here. The Super Stainless Mag Catch installs exactly like the mil-spec part it replaces, so if you've built a lower before or watched a five-minute video, you're set. Depress the catch, thread it through the receiver against the spring, and button it up. It's built for standard 5.56 AR-15 lowers and works across mil-spec platforms, including rifles like the FN15 DMR III.
Why Reach for Geissele Here
Geissele Automatics has been building AR components since 2004, starting with match triggers and growing into a go-to name for parts that competitors and serious rifle builders trust. A mag catch is a little thing, but on a rifle you count on, the little things add up. This one carries the same fit and finish reputation Geissele is known for, backed by their lifetime warranty against defects.
Key Specifications
- Manufacturer: Geissele Automatics
- Model: Super Stainless Mag Catch (SSMC)
- Manufacturer Part Number: 05-1088
- UPC: 817953026953
- Material: Stainless Steel
- Fit: Mil-Spec AR-15 Lower Receivers
- Caliber Platform: 5.56 AR-15
- Type: Magazine Catch / Release Assembly
- Included Spring: Magazine Release Spring
- Installation: Drop-in, installs like mil-spec
What’s Included
- Super Stainless Magazine Catch
- Magazine Release Spring
Frequently Asked Questions
Will the Super Stainless Mag Catch fit my mil-spec AR-15?
Yes. The SSMC is a direct drop-in for standard mil-spec 5.56 AR-15 lowers and installs exactly like the factory catch it replaces. It works across common mil-spec platforms, including rifles like the FN15 DMR III.
What's the advantage over a standard mil-spec mag catch?
It's machined from stainless steel, so it resists wear and won't rust like a plain mil-spec part. Builders often notice tighter mag fit with less slop when a magazine is seated, while the mag still drops free cleanly.
Does the Super Stainless Mag Catch come with a spring?
It does. The SSMC ships as an assembly that includes both the magazine catch and a matching magazine release spring, so you have everything you need for the swap.
Will it work with an extended mag release like the BAD lever?
Yes. Users running Battle Arms Development extended mag releases have found the Geissele catch threads right in and functions as expected. It uses the same standard threading as the mil-spec catch it replaces.





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