Stern Defense Melonite .40S&W Complete Bolt Carrier Group - SD BU40
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Stern Defense
Overview
The Stern Defense Melonite .40 S&W Complete Bolt Carrier Group is designed specifically for the .40 S&W caliber, offering a reliable and durable option for your AR-15 build. With its phosphate finish, this bolt carrier group ensures resistance to wear and corrosion, making it suitable for a variety of shooting conditions. This BCG is commonly used in builds that prioritize performance and reliability in the .40 S&W caliber.
Specifications
Available Merchants(4)
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Price Alert
September 2026 on GunPartPicker
Stern Defense Melonite .40S&W Complete Bolt Carrier Group - SD BU40 ranked #108 of the 217 bolt carrier groups builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since March 2026. All time, it ranks #193 of the 456 bolt carrier groups builders have added.
It was in stock most days in September 2026, but today only Palmetto State Armory has it in stock. It dipped to $142.65 at Optics Planet for a stretch in September 2026, well under its usual $186.99, so sales do come around. Buying today, the lowest price is $186.99 at Palmetto State Armory, above September's low of $142.65, so a better deal may come back.
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