Spikes Tactical STSB920 9mm AR Lower, Black - STSB920
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Spike's Tactical
Overview
The Spike's Tactical STSB920 is a stripped lower receiver designed for AR-9 builds, specifically chambered in 9mm. Constructed from billet aluminum and featuring a forged style, this lower provides a solid foundation for your firearm, with a standard .154 trigger pin size that is compatible with a wide range of aftermarket triggers. It's commonly found in builds that utilize a carbine gas system, making it a versatile choice for those looking to create a reliable and effective 9mm AR platform.
Specifications
Spikes Tactical STSB920 9mm AR Lower, Black - STSB920
Build history on GunPartPicker
Builders have been adding the Spike's Tactical Spikes Tactical STSB920 9mm AR Lower, Black - STSB920 to their builds on GunPartPicker since February 2026. All time, it ranks #669 of the 997 lower receivers builders have added.
It was out of stock everywhere we track for all of August 2026, and today the one retailer we track is out of stock. Listed prices start at $589.50 at KY Gun Company for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
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Frequently Built With
The part most often added in each category by the 9 builds that include this one
Wilson Combat AR-15 Billet Upper Receiver
Wilson Combat Tr-Ttu-M2 Tactical Trigger Unit
Hogue OverMolded Rifle Grip, Finger Grooves, Fits AR Rifles, Gray
Yankee Hill Machine Co. AR-15 16.5" Threaded Fluted Barrel 1-8 Twist
Strike Industries T-Bone AR-15 Charging Handle for .223/5.56 - Black/FDE
FAXON Firearms 9mm AR-15 Bolt Carrier Group for Glock or Colt Magazines - Nitride
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
Builds Featuring This Part
See all 1 →Builds in the community that include the Spikes Tactical STSB920 9mm AR Lower, Black - STSB920
| Build | Parts | Total |
|---|---|---|
 | 11 | $1516.94 |
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