This project attempts to integrate the whole Half-Life experience into a single playable modification. Experience the boundless possibilities of the Mark IV Hazardous Environment Suit as it begins to accept weapons from beyond the reaches of the old Black Mesa. Your arsenal has been dramatically bolstered, allowing you to become more powerful than ever. However, as your firepower expands, so does that of your enemies. Therefore, it becomes even more important to adapt to your environment—to use what is available to you in order to survive the onslaught of your hated nemeses.
And it still doesn't work 100%. Oh well.
if thats the old silenced black ops glock then it should have 12 round magazines :P they have that in the old retail version but you can use it as it was cut. Basically the Silenced Glock is in all likelihood a compact Glock 26C with a 12 round mag.