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- MDX Arms G21 build kit (less frame) is everything you need to complete your PF45 Polymer80 80% Frame.
Kit Will Include:
- Alpha Sports V4 Marksman CNC Custom Slide with RMR Optic Cut and Plate
- Ultra Match Grade 416R Stainless Steel Barrel (USA Made Bar Stock)
- OEM G21 Slide Parts Kit with Guide Rod
- OEM Front and Rear Sights
- OEM Lower Parts Kit
- 80% Frame Not Included
- MDX Arms G21 build kit (less frame) is everything you need to complete your PF45 Polymer80 80% Frame.