Mega Arms Billet Upper & Lower Receiver Set

Mega Arms Billet Upper and Lower Multi caliber Receiver set. Machined from billet 7075-T6 aluminum vs. the more commonly used 6061 for a 70% increase in strength. Integrated trigger guard for added functionality, and strength. Magwell features an enlarged bottom flare and inner chamber for easier magazine insertion. Lug Angle at the shell deflector has been altered to 60.0° for increased effectiveness. Butt stock attachment feature fortified for added strength in high power applications. Includes Billet charging handle that features a new anti-slip surface for improved grip. 19.0z weight.
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