The JARD Sear Assembly for the Desert Tech MDR / MDRX / WLVRN delivers premium trigger performance. It upgrades your trigger by reducing the Second Stage pull weight of 5 lbs. down to 2.5 - 3.5 lbs. depending on adjustment and preference. Installation of this sear pack is quick and simple. Just drop in and go!Sear assembly adjustment is simple and covered in detail within the owners manual so you can tune the perfect custom trigger pull for your MDR / MDRX / WLVRN. The replacement sear pack is housed in a machined aircraft grade aluminum housing, providing lasting durability and reliability.