JP AR15 Complete Low Mass Bolt Carrier Group
The JP Low Mass Carrier works out nicely in the new type of civilian machined receivers that don't have a forward assist. Although it doesn't have the forward assist serrations, it functions in military type receivers as well. It just won't allow the use of forward assist on the receiver. The dust cover functions normally.
You may be wondering why some of the stainless carriers appear black. This is due to a new state of the art surface finish for stainless called QPQ (Quench, Polish, Quench). This is a five-step process resulting in a rock hard surface with natural lubricity. Some want the bright polished look and that is available on the JPBC-3 Low Mass carrier.