ArmaLite AR 10 Bolt Carrier options

[Gator Monroe]

To build a Non Forward Assist AR10A2 Rifle in correct configuration is a non serrated Carrier the correct configuration or were these rifles shipped/sold with Bolt Carrier Groups that had serrations for the Forward assists regardless of FA or non FA upper ? And if ArmaLite made a Bolt Carrier Group in past without serrations can I use an ArmaLite Bolt in another Brand Name non serrated Carrier if an ArmaLite non serrated Carrier is unobtainable ?

[Gator Monroe]

Bump for effect