Our Tungsten weight kit includes 2 mil spec tungsten weights and an LARB spring spacer. This kit allows you to swap the LARBs single stainless weight and change the overall weight of the recoil buffer assembly from 4oz to 5.8oz. The LARB was designed to accept mil spec weights for fine tuning and custom overall weight. The spring spacer MUST be used if not using the single piece LARB weight!
2. mil spec tungsten weights
1. Stainless steel LARB spring spacer
1. 1/8″ stainless steel roll pin