Don't worry - it's the right part
To correct the previous reviewer - this is the right part. 5406 is an ASSEMBLY part number. When you take a 5357 trigger housing and add an 8196-2 ejector, it becomes a 5406. The 5357 housing can be found in several Gen 4 models, so don't freak out when you see that part number. In fact, it's not always marked 5357 just to add some confusion. I trust Brownells will provide the right part, and if not - 100% return policy.

