If youre looking for the highest quality and most durable Lower Parts Kit on the market with all of the upgrades, look no further. The Spikes Tactical Enhanced LPK was designed for the end user who demands the most longevity possible out of the parts in their rifles. Proudly made in the USA.Features :Billet Tool-less Trigger GuardFDE Ergo GripFDE KNS Anti Rotation Gen 2 Mod 2Ambi SafetyBattle Trigger Group