All of our AR series sight posts will fit the Magpul Polymer MBUS Gen 2 sights. These are the traditional polymer Magpul sights that have been around for many years. They accept standard AR15/M16A2 type sight posts and any of our AR sight posts will fit well and work great in them. So you have a wide selection to choose from. The newer steel Magpul MBUS PRO and the new polymer Magpul MBUS Gen 3 require different sight posts made specifically for them.
Click Here to See our AR Sight Posts which fit the MBUS Gen 2: