The Underworld Arms Basilisk Compensator for the Springfield Prodigy 5" is a frame mounted compensator with two large expansion chambers that redirect the gas flow into two large top ports and four angled side ports which dramatically reduces muzzle flip and felt recoil.  This compensator has a single slot lower rail, for a multi slot lower rail please see our other listing.  On most builds recoil spring tuning WILL be required. The stock recoil spring is 12lbs, with this compensator a spring in the 8-10lbs range will usually be necessary for proper function unless high power loads are being used.  Compatible holsters are available HERE  This compensator increases the dimensions of the firearm so it requires a dedicated holster such as the ones we make, or Tac-Rig (these have the most features and highest quality construction), or a universal holster such as the MSP Tier 1, and the blackhawk omnivore light bearing.  Installation Video: Click Here We include a small bottle of blue 243 loctite in the package,  blue 243 is the strongest removable loctite and you only need to use a small amount. If you use too much and a screw is stuck heat the screw with a jet lighter, this will break down the loktite and the screw will come right out. The same method also works if you decided to use red loktite.  A heat gun or soldering iron will not work for a stuck screw as the temp is too low.  Specifications Material: 7075-T6  Weight: 3.1oz Length Overall: 4.5" Length Added to Firearm: .825"