This is a drop-in replacement two stage trigger for the Umarex Gauntlet. The upper portion is hardened steel, and the lower portion is 6061-T6. The trigger allows you to adjust the 1st stage length of pull, and allows use of the factory 2nd stage sear overlap adjustment. It is also compatible with the trigger modification spring provided in our high power tune kit. This is a very easy install and a great modification to any Gauntlet. The trigger is also compatible with the QB air rifle trigger assemblies.