This End Plate fits the "Original" UGS™ for M4 series and includes the pivot screw for mounting our UGS™ Stock Rails. This part can be used to convert the G&P R3 series rifles to use the UGS™ 2.000" HPA and Milspec stock rails so the stick-on rails are no longer needed.

• Cross compatible with Type 1 or Type 2 UGS™.
• Can be used to used to convert G&P R3 to use PolarStar Stock Rails.
• Includes pivot screw.
• Not compatible with HK417 UGS™.