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17-round 9mm magazine as seen in Black Mesa.

Overview

9mm bullets are the ammunition for the Glock 17 and the MP5. They are commonly found throughout the Black Mesa Research Facility, usually in two forms: a single 17-round staggered column Glock magazine, or a 50-round MP5 magazine.

Gameplay

9mm bullets are extremely common, and they are seen to be used quite frequently throughout the game. The maximum carry limit seems to be 250 9mm bullets.

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