ProMag COLA35 40-Round .223/5.56 AR-15/M16 Magazine

The ProMag COLA35 is a 40-round magazine designed for .223 Remington and 5.56 NATO ammunition in most commercial-spec and mil-spec AR-15 receivers. It includes a polymer follower, chrome silicon wire spring, and a precision-machined magazine catch cutout for a secure fit. The supplied product information also states that the magazine is made in the United States and includes a lifetime warranty.

Key Specifications

• The magazine holds 40 rounds.
• It is intended for .223 Remington and 5.56 NATO ammunition.
• The magazine is designed for most commercial-spec and mil-spec AR-15 receivers.
• It is also listed for use with AR-15 and M16 platforms.
• The magazine uses a polymer follower.
• The spring is made from chrome silicon wire.
• The magazine catch cutout is precision machined.
• The supplied product information states U.S. manufacture.
• A lifetime warranty is stated in the supplied product information.

With its 40-round capacity and compatibility with widely used AR-15 and M16 platforms, the COLA35 provides a practical magazine option for range sessions, training, and general equipment preparation. Its specified follower, spring, and magazine catch design support straightforward integration with compatible receivers.