MEGA MACHINE SHOP Billet Uppers & Lowers

These Mega Machine Shop billet uppers & lowers have been…

These Mega Machine Shop billet uppers & lowers have been designed for a truly unique look and are machined from billet 7075-T6 aluminum instead of the more commonly used 6061 for a 70% increase in strength. Featuring an integrated trigger guard for added functionality, and strength and a magwell that has an enlarged bottom flare and inner chamfer for easier clip insertion. The Lug Angle at the shell deflector has been altered to 60.0° for increased effectiveness and the upper receiver has been re-designed to incorporate increased wall thicknesses for added strength. A butt stock attachment feature is fortified for added strength in high power applications. The billet charging handle features a new anti-slip surface for improved grip and the entire piece is Black Hard anodized with a surface hardness of 60 Rockwell.  For more information on this and other Mega Machine Shop products, visit

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Load Comments
  • lane crawley

    Can you build a 30 carbine lower receiver that is made for the 7.62×33 cartridge and magazine?
    If so what kind of cost? I may start a new line of police rifles if you can do this.
    Lane Crawley