This is a San Tan Tactical Kit, model STT-UGK1.
The Ultra Grip Kit includes the Ultra Grip Extended Mag Release Button" Ultra Grip Bolt Catch" and Ultra Grip Forward Assist with spring. The San Tan Ultra Grip pattern provides excellent grip for use with or without gloves. Fits all mil spec upper and lower receivers.
Features:
Bolt Catch
Forward Assist
Extended Mag Release
