ATI AR15 MILSPORT 9MM BILLET LOWER RECIEVER

• Machined from 7075-T6 aircraft grade billet aluminum
• Matte black hard-coat anodized per Mil 8625 Type 3 Class 2
• Precision machined magazine well with beveled feed lips
• Caliber marking of “Multi” so it can be used with different pistol caliber uppers
• Compatible with most standard AR-15 components and most aftermarket parts
• Take down pin spring and detent hole is threaded for a 4-40 set screw for easy capturing (hardware included)
• Upper tension screw behind grip screw (threaded hole with hardware included) to adjust any “slop” out of vertical fit between upper and lower
• Ambidextrous trigger finger rests with grooves (above and below mag release / mag catch)
• Threaded bolt catch pin (Threaded hole and hardware)
• Integrated large opening “winter” trigger guard
• Proprietary magazine catch assembly and ejector is included.

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