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Description
The low mass light Bolt and Bolt Carrier Assembly comes complete with cam pin, firing pin and firing pin retainer. Carrier is made from 8620 steel and is Nitrided Bolt is made from 9310 steel and is maganese phophate MPI Tested. Compatible with all AR-15 platform systems. The Anderson Lightweight Bolt Barrier group Total weight is 9.3888 ounces.
.223 / 5.56 bolt assembly is compatible with .300BLK as well!
Fully mil-spec construction
Chrome lined gas key
Durable phosphate finish (Carrier)
9310 steel bolt is MPI tested (Nitride)
8620 steel full-shroud M16 style bolt carrier (with lightweight cuts)
Properly staked gas key
9.3888 oz.
SKU#: B2-K630-N01
What adjustments need to be made to make this run smooth? Do you have to have an adjustable gas block or can you just change out the buffer/spring?