AR-15 SD-BU45 Bolt Carrier .45ACP Black
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Stern Defense
Overview
The Stern Defense SD-BU45 Bolt Carrier is engineered specifically for .45 ACP builds, providing a reliable and durable option for those looking to convert their AR-15 platform to this caliber. The black finish not only contributes to a sleek appearance but also offers a level of protection against wear and corrosion. This bolt carrier is commonly found in builds focused on enhanced stopping power and versatility, catering to those who prefer the .45 ACP round.
Specifications
August 2026 on GunPartPicker
Stern Defense AR-15 SD-BU45 Bolt Carrier .45ACP Black ranked #123 of the 229 bolt carrier groups builders added on GunPartPicker in August 2026.
Today none of the 2 retailers we track has it in stock right now. Listed prices start at $150.65 at Brownells for when it comes back.
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