Our COS21 grips are made of a material called PA-12. Known for its shock absorption. and chemical resistance. We make both the compact which utilizes the MBX flush fit Defender 17+1 magazine and the full size. The compact will accommodate the standard 126mm 20+1 magazine.
Both grips are the same length at the mainspring housing. The compact has a notch cut out to accommodate the flush fit mag. It is more compact due to no magazine hanging below the grip. The compact will not accept a magwell where the full size will.
Many of these have been installed on other double stack product which use the traditional 2011 style frames.
The dimensions are:
- 1.265″ wide
- 2.25″ deep at the base
- 1.94″ just below the trigger guard
- 4.30″ top of grip to base