Kak Industry AR-15 K-SPEC Low Mass BCG 5.56 NATO Gold

KAK's K-SPEC Low Mass BCG pairs an aluminum carrier in satin gold anodize with a dual ejector bolt and an NP3 cam pin. It keeps the K-SPEC down vent layout, with the gas relief ports moved under the carrier into the magazine feed lip channels, plus angled sand cut carrier rails. It is machined to the M16 full auto profile and is rated for 5.56 NATO and 300 Blackout.

KAK is upfront about this one: it is not a hard use BCG. Treat it as a consumable part for a rifle with a dialed in gas and buffer system, and KAK recommends mid length, rifle length or similar gas systems. It suits a tuned, light build where less reciprocating mass is the goal.