The BCM MK2 Buffer Mod 1 - T2 is a precision-engineered 3.8oz buffer designed as a standalone tuning option for AR pattern rifles already equipped with the MK2 recoil mitigation system.BCM MK2 Buffer Mod 1 - T2 (3.8oz weight)Fine-tunes optimal reliability and ejection patterns for over-gassed riflesCompatible with both suppressed and unsuppressed configurationsReduces felt recoil without compromising reliabilityProvides consistent carrier velocity for improved accuracyIncreased internal counterweight travel reduces bolt bounceUses M16A4 rifle spring with more coils than M4 carbine for wider operating envelopeInternal spring reduces counterweight noise and ensures consistent weight placementSpecifically designed for upgrade use on AR pattern rifles already using the MK2 Recoil Mitigation System. Ideal for precision shooters seeking to optimize their rifle's performance and reliability characteristics.