Gas Block

AR15 Front Sight Bases (FSB)

Things to consider about AR- 15 Front Sight Bases / Gas Blocks

  • gas tube
  • gas tube pin
  • front sight
  • gas block
  • F-marked front sight bases (FSB)
  • taper pins vs. straight pins
  • parkerize under the FSB

AR-15 Front Sight Bases (FSB) Parts List

  • AR15 Front Sight Post A2 (Square)
  • AR15 Front Sight Base w/ Bayonet Lug
  • AR15 Front Sling Swivel
  • AR15 Front Sight Post A1 (Round)
  • AR15 Front Sight Taper Pin(x2)
  • AR15 Front Swivel Rivet
  • AR15 Front Sight Detent
  • AR15 Front Sight Spring
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