The new FX Impact MKII Side Shot magazine improves the overall shooting experience. Adds a higher shot capacity to each caliber from the previous generation! Faster reloading and easier maintenance with the quick detach face plate! This magazine is very similar to the original after market FX Impact Side Shot magazine. The main difference is this FX Impact MKII magazine has a durable hard plastic body which reduces the overall weight vs the standard Side Shot magazine that has an aluminum body.