Shop › MFT TEKKO METAL AR15 INT RL SYSTM MFT TEKKO METAL AR15 INT RL SYSTM $99.99 Mission First Tactical Tekko Metal AR Carbine Integrated Rail System, Replaces Factory Handguard, 7" Drop In Integrated Rail System, Black TMARCIRS Quantity: Add To Cart Added! Mission First Tactical Tekko Metal AR Carbine Integrated Rail System, Replaces Factory Handguard, 7" Drop In Integrated Rail System, Black TMARCIRS