The Micro Conversion Kit (MCK) is engineered around standard factory handgun configurations. While stock OEM iron sights offer seamless clearance across all chassis generations, upgrading to aftermarket or suppressor-height sights requires reviewing physical height and length parameters. This article explains how aftermarket iron sights interact with the MCK, MCK 2.0, and MCK 3.0 platforms, and lists confirmed incompatible sight brands.
Our chassis systems rely on precise internal channel dimensions to maintain a secure fit around the handgun slide. Because aftermarket sights vary significantly in size, compatibility depends heavily on your specific chassis generation.
1.0 MCK Models: Strictly engineered for standard factory OEM iron sights only.
MCK 2.0 & MCK 3.0 Models: Designed with expanded internal hood clearance to accommodate select aftermarket and suppressor-height sights, provided they do not exceed maximum OEM length and height thresholds.
Use the diagnostic table below to check whether your pistol's iron sights are compatible with the MCK platform:
| Sight Type / Brand | Compatibility Status | Mechanical Fitment Details |
| Standard OEM Factory Sights | 100% Compatible | Natively clears all internal channels across 1.0, 2.0, and 3.0 models. |
| Standard Suppressor-Height Sights | Compatible (2.0 & 3.0) | Fits within the expanded sight channel of MCK 2.0 and MCK 3.0 units. Incompatible with 1.0. |
| TruGlo Sights | Strictly Incompatible | Exceeds standard OEM height and length profiles, causing internal drag or physical blockage. |
| Ameriglo Sights | Strictly Incompatible | Oversized dimensions block the slide from fully seating into the internal lock block. |
| Leupold Sights | Strictly Incompatible | Extended footprint prevents proper alignment with the internal charging handle teeth. |
| Meprolight Bullseye Sights | Strictly Incompatible | High-profile design prevents the slide from clearing the internal shroud. |
⚠️ CRITICAL FITMENT WARNING: Never attempt to force a slide with oversized aftermarket sights into the MCK. Forcing an incompatible sight into the chassis will scratch your firearm's finish, jam the slide assembly, or crack the internal polymer shroud. Always verify that your aftermarket sights do not exceed standard OEM height and length parameters prior to insertion.