ProMag COL27 Colt M4 .22 LR 10rd Magazine — Black

The ProMag COL27 is a detachable 10-round magazine designed for Colt M4 .22 LR rifles, intended as a reliable spare or replacement for range use and rimfire training. Its body uses DuPont Zytel polymer for lightweight durability, and the follower is injection molded for consistent feeding. The magazine spring is formed from heat-treated chrome-silicone wire to maintain tension over repeated cycles. Note: this magazine does not fit Ciener and G.I. style .22 conversion rifles.

Key Specifications

• The capacity is 10 rounds.
• The caliber is .22 LR.
• The magazine is designed to fit Colt M4 .22 LR rifles.
• The construction uses DuPont Zytel polymer for the magazine body.
• The magazine follower is injection molded.
• The spring is formed from heat-treated chrome-silicone wire.
• The finish/color is black.
• The product type is detachable magazine.
• The model designation is COL27 (Standard).
• This item is made in USA.

Built for dependable, low-cost rimfire practice and training, the ProMag COL27 offers a straightforward, durable magazine solution for Colt M4 .22 LR platforms. Its polymer body and corrosion-resistant spring materials prioritize consistent feeding and ease of carry in a range bag. For shooters seeking a simple, serviceable spare or replacement magazine for regular range work, this magazine provides a pragmatic balance of reliability and value.