Product DescriptionThe Noveske Bolt Assembly is a premium AR-15 bolt built for dependable performance across multiple popular calibers, including 5.56 NATO, 300 Blackout, and 22 Nosler. Manufactured from Carpenter 158 steel, this bolt is designed for durability in demanding shooting conditions and is well suited for replacement, upgrade, or custom rifle build applications. The bolt is shot peened and magnetic particle tested to help enhance strength, quality, and long-term reliability. It is also compatible with small bolt carrier setups, making it a versatile choice for serious AR-platform users.Product Highlights Compatible with 5.56 NATO, 300 Blackout, and 22 Nosler AR-15 platforms Constructed from durable Carpenter 158 steel for strength and longevity Shot peened bolt helps improve durability under repeated firing cycles Magnetic particle tested for added quality assurance and dependable operation Designed as a bolt assembly for upgrades, replacements, and custom rifle builds Specs Product Type: Bolt Assembly Platform Compatibility: AR-15 Caliber Compatibility: 5.56 NATO, 300 Blackout, 22 Nosler Material: Carpenter 158 Steel Bolt Treatment: Shot Peened Testing: Magnetic Particle Tested (MP Tested) Compatibility: Small Bolt Carrier Compatible Weight: 1.52 oz UPC: 840906103975 Manufacturer Part Number: 05000353 Brand: Noveske Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.