Omega Mfg Inc. H-3 Series heavy buffers are an excellent reliability upgrade shooters can make to their AR-15 carbines. Heavy buffers can reduce felt recoil as well as reduce the cyclic rate on full-auto rifles. Standard carbine buffers contain three steel weights; The H3 Buffer is solid construction. No weight movement for a quieter shooting gun. As a rule, shorter gas systems benefit the most from heavier buffers.