CMMG Gas Ring Split Type 3-Pack for AR-15

CMMG Gas Ring Split Type Features The CMMG Gas Ring Split Type set is manufactured to Mil-Spec dimensions meaning each ring drops onto a standard AR-15 bolt exactly where the factory rings sit without any special fitting. The split design allows the ring to compress slightly as it seats into the bolt s gas ring grooves maintaining tension against the carrier for a proper gas seal. That seal is what keeps propellant gas from bleeding past the bolt during the firing cycle which is essential for reliable extraction and bolt carrier movement. Over time and after many thousands of rounds factory gas rings lose tension and begin allowing gas to leak past leading to sluggish or incomplete cycling. Replacing worn rings with this set is one of the simplest and cheapest fixes available for an AR-15 that has started to short stroke or fail to lock back reliably. Because the set comes as three rings it is enough to fully replace the gas ring stack on a single bolt in one go matching the original three ring factory configuration. Builders assembling a bolt carrier group from parts or owners performing routine maintenance on an existing rifle both get a direct no guesswork replacement here. Keeping fresh gas rings on hand is inexpensive insurance against one of the more common reliability issues an AR-15 develops with age. CMMG Gas Ring Split Type Specifications Manufacturer: CMMG Model: Gas Ring Split Type Quantity: 3 Compatible Hosts: AR-15 Mil-Spec Bolts Available At: ARMSAGORA