STERN DEFENSE MOD5 UPPER 9MM 8.5IN BBL MLOK RAIL
All Stern Defense upper receivers2 options
- 4"from $443.48, in stock
- 8.5", this page
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Stern Defense
Overview
The Stern Defense MOD5 Upper is a complete upper receiver designed specifically for AR-9 builds, featuring an 8.5-inch barrel that's ideal for those seeking a compact and maneuverable setup. This upper is chambered in 9mm, allowing for reliable performance with subsonic ammunition, making it suitable for both range shooting and personal defense. You'll commonly find this upper in builds focused on 9mm caliber, where versatility and precision are key.
Specifications
Available Merchants(1)
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Price Alert
October 2026 on GunPartPicker
STERN DEFENSE MOD5 UPPER 9MM 8.5IN BBL MLOK RAIL ranked #124 of the 844 upper receivers builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #342 of the 2,053 upper receivers builders have added.
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today the one retailer we track has it in stock. Prices barely moved in October 2026, holding around $498.56, with no real sale all month. Buying today, the lowest price is $498.56 at BattleHawk Armory, which matches the best price we saw in October.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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Frequently Built With
The part most often added in each category by the builds that include this one
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Radian Talon-GI Safety Lever - FDE
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
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