Stern Defense SD BU45 Bolt Carrier AR-15 Glock-Pattern Upper Receiver .45 ACP Black 004-SD BU45-D1-M
Stern Defense
Overview
The Stern Defense SD BU45 Bolt Carrier AR-15 Glock-Pattern Upper Receiver .45 ACP Black 004-SD BU45-D1-M is a upper receiver. Compare prices from multiple merchants and find the best deal.
Specifications
Stern Defense SD BU45 Bolt Carrier AR-15 Glock-Pattern Upper Receiver .45 ACP Black 004-SD BU45-D1-M
Available Merchants(5)
Prices checked
Price Alert
September 2026 on GunPartPicker
Stern Defense SD BU45 Bolt Carrier AR-15 Glock-Pattern Upper Receiver .45 ACP Black 004-SD BU45-D1-M ranked #267 of the 615 upper receivers builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since June 2026. All time, it ranks #489 of the 1,714 upper receivers builders have added.
Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today 4 of the 5 retailers we track have it in stock. Prices barely moved in September 2026, holding around $150.65, so there haven't been real sales lately. Buying today, the lowest price is $150.65 at Optics Planet, which matches the best price we saw in September.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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