Latest Upper Receivers

Rubber City Armory Blacknitride+ Bolt Carrier Groups – An ARBuildJunkie Q&A

We recently sat down with Jeff Larson, director of operations at Rubber City Armory, to discuss his company’s Blacknitride+ bolt carrier groups. Purchasing a quality bolt carrier group is one of the most important things you can do to ensure you have a reliable firearm. With many of our go-to bolt carrier groups hard to come by, we recently purchased a Rubber City Armory bolt carrier group for a build and were very impressed with its quality and its glasslike black nitride finish.

Adjustable Gas Blocks – School of the American Rifle

adjustable gas block

Chad from School of the American Rifle talks adjustable gas blocks. What are the caveats of using an adjustable gas block on your next AR build? What to look for in an adjustable gas block, and why a gas block that offers tactile feedback is preferred. Chad demonstrates how to prevent an adjustable gas block from becoming carbon locked, and shows us an example of what happens to a adjustable gas block if it is not properly maintained over time.

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