1 1/8-Inch Tactical RIS Handguard Insert

This insert cap fits inside the Tactical RIS Handguard and attaches to the tactical or other 1 1/8-inch barrel.  Comes with 4 x M4x6 socket set screws (Driver: 2.0mm)
For use with these Handguards

Dimensions:
OD: 1.47" or 37.4mm, ID: 1 1/8" or 27mm, W: 1.89" or 48mm