All parts needed to assemble a Quarter Circle 10 .40 S&W 7.5 inch barreled upper with Quarter Circle 10 .40 caliber bolt.

$560.00
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Complete .40 caliber upper.

This is an complete set of parts to assemble a .40 S&W upper with a 7.5 inch barrel.  The set comes complete with a Quarter Circle 10 .40 S&W bolt and barrel.  

Includes:

Aero Precision M4E1 enhanced upper.

Aero Precision AR15 7 inch, Enhanced M-LOK Handguard, Gen 2  (1.72" inside diameter fits most muzzle devices and 1.5" suppressors)

Quarter Circle 10 7.5 inch .40 S&W barrel with .578-28 Threading

Quarter Circle 10 .40 caliber bolt.