CZ-USA Bren 2 5.56x45mm 30-Round Magazine with Window

The CZ Bren 2 in 5.56x45 is engineered around STANAG-pattern magazines, and although the rifle accepts most Magpul PMAG Gen M3 and Lancer L5AWM magazines, the factory CZ-USA polymer mag is the recommended option. American Rifleman's testing notes that the Bren 2 occasionally shows feeding finickiness with non-CZ STANAG mags, especially older PMAG generations and certain steel-body designs. Factory CZ mags solve the issue and run flawlessly.

This 30-round version adds a translucent body window aligned with witness markings for fast round-count assessment without removing the magazine. Construction is glass-reinforced polymer with an anti-tilt follower, and the body drops free cleanly in both the factory Bren 2 magwell and the HBI flared magwell. The opaque-body version is also available at the same price for shooters who prefer a clean look or who run the Bren 2 in low-light scenarios where the window can leak the chamber light.

The CZ-USA Bren 2 7.62x39 magazine is a separate proprietary part and is NOT cross-compatible with this 5.56 mag. AR-15 5.56 PMAGs will physically fit the 5.56 Bren 2 magwell but should be tested for reliability before being trusted for duty or defensive use.