Colt AR-15 Half-Circle Bolt Carrier w/ Gas Key, Semi-Auto, 5.56X45 NATO *Good*

Original Colt manufactured "half circle" semi auto bolt carrier for AR-15 rifles & carbines, w/ carbine, 5.56mm NATO, in *Good* condition.

Sold as a unit.

These are great upgrade parts for your Colt AR!
This is an early style Colt Half Circle Semi-Auto bolt carrier.
Includes the carrier and gas key only.
Designed for the 5.56mm NATO cartridge, these bolts will also accept .300 AAC and .25-45 Sharps.
Chrome lined bolt carriers provide smooth cycling when firing.
These bolt assemblies may show some lights signs of use and wear.

Parts must be inspected and tested by qualified and competent gunsmiths or armorers before use in a firearm.
Not all firearm parts are interchangeable; use of surplus parts without proper knowledge could cause a firearm to malfunction and cause property damage, injury or death.