These .40 S&W Bolts are machined by Quartercircle 10 in Tucson, Az. These .40 S&W bolts have the "Glock" cut in them allowing them to run through a standard Glock magazine with no hangups. In addition they are ramped for the use of a standard AR15 hammer. Bolts come complete and ready to run. 

The .40 S&W barrels are turned, chambered and threaded on 4140 Chrome Moly (1 in 10 twist)  blanks by QC10 in the shop in Tucson AZ. They are threaded 5/8x24 with a medium contour (.750) and finished with a Melonite Hard Cote. These Barrels are made to fit QC10 bolts and they cannot guarantee any other combination of bolt and barrel, which is why these are sold as a set only. 

QC10 .40 S&W Bolt and 5.5" Barrel

  • Brand: QuarterCircle10
  • Product Code: QC-40BLTBRL-5.5
  • Availability: Out of Stock
  • $490.00 USD