Faxon Firearms is now offering matched bolts and barrels in both 5.56 NATO and 300 BLK configurations. According to the company, when a customer orders both a barrel and a bolt for the same caliber, the company will “precision match the bolt to the barrel using custom hardened gauging.” For clear identification, the company will laser engrave both indicating they are a matching set.

The company is using 9310 tool steel for the bolt, which is said to be stronger than Carpenter 158 that is frequently used in AR rifle bolts. The bolt carriers can be standard M16 type or the lightweight Gunner series bolt carrier.

Faxon Firearms stated there are no additional charges for this service. However, the company states that this service is applied only to in stock bolts and barrels. The company states the process adds about a week to the delivery time.

Specifications

Bolt

• made from 9310 Tool Steel (said to be stronger than Carpenter No. 158 steel)
• full Mil-Spec heat treatment
• shot peened to military specifications
• Magnetic Particle Inspection (MPI)
• the back of the lugs have been chamfered for improved reliability
• spring, silicone insert, Crane O-ring installed
• QPQ – salt bath nitrided

Extractor

• made from S7 Tool Steel
• full Mil-Spec heat treatment
• shot peened to military specifications
• QPQ – salt bath nitrided

“For customers who do not have a set of headspace gauges or a gunsmith available, the factory-matched bolt/carrier and barrel removes all the guesswork from putting together an AR-15,” said Nathanial Schueth, Director of Sales & Product Development. “Further, the laser-engraving ensures that no bolt and barrel are mixed up between rifles.”