The KDG Stribog Rail Extension MkII (SRX3.25) from Kinetic Development Group is a meticulously engineered upgrade designed to improve the ergonomics and versatility of your Stribog SP9 with 3.25 inches of additional rail space in FDE finish.KDG Stribog 3.25" Rail Extension MkII (SRX3.25)Makes room for a second full M-LOK slot on the bottomContoured profile for improved ergonomicsEquipped with M-LOK slots along entire lengthDesigned to accommodate a variety of suppressorsCrafted from 6061-T6 aircraft-grade aluminumFDE anodized finishPerfect for Stribog SP9 owners looking to mount additional accessories improve grip comfort and optimize their firearm's versatility with professional-grade construction and easy installation.