Mega arms Lower features a nylon tipped upper tensioning screw. MEGA ARMS Megalithic MTS (monolithic) Upper/Lower receiver set with rifle length KeyMod rail for 308, 6. When pulling into Mega Arms, you wouldn’t know what was going on inside by the low-key appearance of the building. The upper and lower are fully machined from a billet of 7075-T6 aluminum and hardcoat anodized black to better than military specifications for longer term corrosion resistance. Quality AR-15 upper receivers from top brands. (Photo: Zev) Zev Technologies just announced the return of the Maten family of AR-style builder’s sets and components. American-made with true black anodize and enlarged trigger guard. Did Zev drop the Mega product lines? The MEGA MATEN Billet Receiver Set was designed to complement the enhanced features of the MEGA MATEN rifle product line while retaining compatibility with SR25/DPMS pattern accessories to give you the most options for completing your build. Since then, the brand has been quiet until a couple of years ago. Takes DPMS style barrel and magazines. mw jnn 2umvqa blvz g2v4x fjhha0ic m1jh bv gxy1 3g8