height: 87mm side rail length: 105mm top rail length: 133mm top rail width: 20mm side rail inner width: 15mm tactical ak side rail mount2omm, 8slots, overall matt black metal cotruction+free shipping(sku12050018) cyma ak side rail heavy duty mount base full metal cotruction attach to ak series 20mm standard weaver base work with any scope mounts overall matt black processing itall any red dot or scope onto this 20mm scope mount base package including: - 1 x mount base general for a74 electric gun series - 1 x retail plastic package "供应74u侧镜桥"的型号为74u，标准类型是美标，标准编号为08，规格是20mm，品牌为smc，样品或现货是现货，加工定制为是