Let’s Dive into CMMG, Inc AR15 Spring, Magazine Catch
The CMMG, Inc AR15 Spring, Magazine Catch is a seemingly insignificant, yet absolutely critical component of any AR-15 rifle. This small spring is responsible for ensuring your magazines are securely held in place, and released reliably when needed. Without it, your AR-15 becomes a very expensive single-shot weapon. CMMG has a solid reputation for producing quality AR parts, making this spring an appealing choice for replacements or new builds.
I needed this spring because, during a recent AR-15 build, the original spring I had went flying across my garage and disappeared into the ether. The frustration of searching for a tiny part for hours is a feeling any AR builder knows well.
The CMMG spring arrived in a small plastic bag. Initially, it looked like any other AR-15 magazine catch spring; a small coil of metal. However, upon closer inspection, the finish was clean and consistent, giving me confidence in its build quality.
Compared to some generic springs I’ve used in the past, the CMMG spring felt slightly stiffer. I’ve used springs from Brownells and DPMS in previous builds; this felt comparable to the DPMS spring, but slightly more robust. My first impression was positive; this appeared to be a quality, mil-spec replacement part that wouldn’t let me down.
Real-World Testing: Putting CMMG, Inc AR15 Spring, Magazine Catch to the Test
First Use Experience
I installed the CMMG, Inc AR15 Spring, Magazine Catch into a lower receiver I was assembling for a lightweight AR build. The installation process was straightforward. It seated perfectly within the magazine catch assembly. I tested the magazine release with various magazines, including Magpul PMAGs, Lancer L5 AWMs, and some older aluminum GI mags.
The magazine release functioned flawlessly in dry conditions at my workbench. I didn’t experience any sticking or binding. Everything felt crisp and responsive.
Extended Use & Reliability
After several range trips and hundreds of magazine changes, the CMMG, Inc AR15 Spring, Magazine Catch continues to perform admirably. There are no signs of wear or deformation. The magazine release remains firm and reliable.
Maintenance is non-existent, as it is a spring encased within the lower receiver. I haven’t needed to clean or lubricate it specifically. Compared to a cheaper spring I used in a previous build that began to weaken after about 500 rounds, this CMMG spring seems far more durable.
Breaking Down the Features of CMMG, Inc AR15 Spring, Magazine Catch
Specifications
- Manufacturer: CMMG
- Gun Model: AR-15
- Gun Type: Rifle
- Material: Spring steel
- Function: Provides tension for the magazine catch to securely hold magazines in the AR-15 lower receiver.
These specifications are essential because the spring needs to be made of high-quality steel to withstand repeated compression and expansion without losing its tension. It also needs to be the correct length and diameter to fit properly within the magazine catch assembly and provide the necessary force.
Performance & Functionality
The CMMG, Inc AR15 Spring, Magazine Catch performs its job perfectly. It provides consistent tension, ensuring magazines are held securely in place until released intentionally. There are no weaknesses that I’ve identified.
The spring more than meets my expectations. It provides reliable performance at a budget-friendly price.
Design & Ergonomics
The design is simple and functional, as it should be for a spring. Build quality is excellent; the spring is well-made and feels durable.
The spring’s function is intuitive; there’s virtually no learning curve.
Durability & Maintenance
The CMMG, Inc AR15 Spring, Magazine Catch is made from durable spring steel. It should last for thousands of magazine changes.
Maintenance is essentially nonexistent. Periodic inspection during lower receiver cleaning is all that’s necessary.
Accessories and Customization Options
There are no specific accessories for a magazine catch spring. It is compatible with any standard AR-15 magazine catch button and lower receiver. The spring will also work with ambidextrous magazine releases.
Pros and Cons of CMMG, Inc AR15 Spring, Magazine Catch
Pros
- Reliable performance: Provides consistent tension for secure magazine retention.
- Durable construction: Made from high-quality spring steel for long life.
- Affordable price: An inexpensive replacement or upgrade part.
- Easy installation: Drops right into any standard AR-15 lower receiver.
- CMMG reputation: Backed by a reputable manufacturer known for quality AR parts.
Cons
- Small size: Easily lost during installation or disassembly.
- Limited features: It’s just a spring; there’s not much to it.
Who Should Buy CMMG, Inc AR15 Spring, Magazine Catch?
This spring is perfect for AR-15 builders, armorers, or anyone needing to replace a worn or lost magazine catch spring. It’s a simple, reliable, and affordable solution for ensuring proper magazine retention. Anyone looking for a high-end custom spring should skip this product.
No must-have accessories or modifications are required, it is ready to use.
Conclusion on CMMG, Inc AR15 Spring, Magazine Catch
The CMMG, Inc AR15 Spring, Magazine Catch is a small but essential component that delivers reliable performance at an affordable price. The low price is definitely justified.
I would definitely recommend it to anyone building or repairing an AR-15. Don’t let a tiny spring be the weak point in your rifle. Invest in the CMMG magazine catch spring for peace of mind.