Maxim Defense CQB Buffer & Spring H2 4.65 oz AR-15

The Maxim Defense CQB Buffer & Spring Combination is a purpose-built buffer and spring set engineered by Maxim Defense Industries for use with the Maxim CQB Stock on the AR-15 platform. It drops into the CQB Stock system to deliver reliable cycling in compact CQB (Close Quarters Battle) rifle configurations.

This is the H2 weight variant, with the buffer weighing 4.65 oz in tungsten construction with a natural finish. The extra mass of the H2 buffer helps properly time the bolt carrier group in the CQB Stock's shorter buffer tube, where standard carbine buffers can over-cycle. The matched spring is built to Maxim's spec for the CQB Stock system, giving builders a one-piece drop-in component set rather than mixing parts.

Whether you are assembling a new compact AR-15 in the CQB configuration, replacing a worn buffer and spring in an existing Maxim CQB setup, or carrying spares for field maintenance, this genuine OEM buffer and spring combination provides the weight and spring rate matched to the Maxim Defense CQB Stock on AR-15 rifles.