The Mega Arms MTS or Megalithic Tactical System is a really cool one piece upper that replaced their popular “Monolithic” uppers that they used to make. When the Megalithic version was introduced there were two models, one KeyMod and one Quad Rail. For some time though it seemed that Mega Arms would not be producing the Quad Rail version due to the popularity of the KeyMod version. After tons of people requested that Mega Arms make the Quad Rail MTS upper they realized that there was enough demand for it to make that happen. Starting next week, Mega Arms will begin shipping their new Quad Rail MTS uppers and they look awesome.
The MTS uppers look fantastic paired up to a Mega Arms billet lower but will work great with any forged or billet, mil spec dimension AR-15 lower receiver. All MTS uppers also come with a proprietary barrel nut and barrel nut wrench. If you’re looking for an ultra-rigid upper/rail setup, this is it. Check out the complete list of dealers at the link below. I’ll be waiting for RainierArms.com to get them personally.