RifleSupply Polymer Rail Section Kit for MOE Handguard L2/L3/L4/L5 Sizes 4.3 out of 5 stars 711 2 offers from $11.99 #18 Ficero Mlok Picatinny Rail Aluminum Section Accessory, 3 Slots (2 Pack) 3.8 out of 5 stars 62 1 offer from $12.99 #19 Hannahcos Tactical Polymer Rail Comp...