Product Description
The ProMag COL21 is a flush-fit, 5-round replacement magazine designed for AR-15 rifles chambered in .223 Remington / 5.56x45mm. Built with a heat-treated steel body and a durable blued/oxide-style finish, it’s engineered for dependable performance while maintaining a low-profile fit. An injection-molded magazine follower and a chrome-silicone wire spring help promote consistent feeding. Made in the USA.
Product Highlights
- Flush-fit 5-round AR-15 magazine for .223 Rem / 5.56x45mm NATO platforms
- Heat-treated steel (carbon steel) magazine body for strength and long service life
- Blued/black-oxide style finish for added corrosion resistance
- Injection-molded follower paired with a chrome-silicone wire spring for reliable feeding
- Made in the USA
Specs
- Brand: ProMag
- Manufacturer Part Number: COL21
- UPC: 708279005596
- Platform Compatibility: AR-15
- Caliber: .223 Remington / 5.56x45mm NATO
- Capacity: 5 rounds
- Fit: Flush fit
- Body Material: Heat-treated steel (carbon steel)
- Follower: Injection-molded (polymer)
- Spring: Chrome-silicone wire
- Finish/Color: Blued / black oxide (blue)
- Country of Manufacture: USA
- Item Weight: 0.35 lb
Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product’s manufacturer.
Customer Satisfaction Guaranteed
Most orders placed before 12 Noon (EST) ship same day and FREE SHIPPING on orders $50+
No-Hassle Returns for 30 days from your purchase date.
TLO is a family-owned, American small business in GA. We treat you right.