Major
Options – Used as primary or as backup to optics. Rear is dependant
on type of upper receiver Carry Handle, Fixed sights or Folding
Costs $0
– $300+ / pair
Tier One – High quality, tested
Other Parts Required: Gas tube, gas block, front
sight assembly, Delta ring assembly, handguards / rail assembly,
muzzle device, bayonet lug
Buyers Beware: Imported
knock offs are poor quality while they may look
as nice as high quality |