Spike's Tactical Spider 9mm AR-15 Lower - Colt
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Spike's Tactical
Overview
The Spike's Tactical Spider 9mm AR-15 Lower is a stripped forged lower receiver designed specifically for the AR-9 platform, making it a solid choice for those looking to build a 9mm carbine or pistol. Made from 7075-T6 aluminum and finished with hardcoat anodizing, this lower receiver is built for durability and reliability, featuring a standard .154 trigger pin diameter for compatibility with a wide range of trigger options. This lower commonly appears in builds focused on pistol configurations, optimized for 9mm performance.
Specifications
Spike's Tactical Spider 9mm AR-15 Lower - Colt
September 2026 on GunPartPicker
Spike's Tactical Spider 9mm AR-15 Lower - Colt ranked #22 of the 477 lower receivers builders added on GunPartPicker in September 2026, behind the Colt M4 Commando 5.56mm Semi-Auto Lower Receiver Assembly With "LE" Prefix, with about 1 in every 167 lower receivers added to builds. Up from #195 in August. Builds with this lower receiver are mostly chambered in 9mm (73%, then 5.56 NATO 27%), mostly on blowback gas (67%, then mid-length 33%), and nearly all AR-9.
It was hard to find in September 2026, in stock on only 12 of the 30 days we checked, and today 2 of the 6 retailers we track have it in stock. Prices barely moved in September 2026, holding around $161.10, so there haven't been real sales lately. Buying today, the lowest price is $161.10 at Primary Arms, which matches the best price we saw in September.
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 builds that include this one
Spike's Tactical Flat Top Upper w/ Ejection Port Door, 9MM, Black - SFT902D
Rise Armament Super Sporting AR15/10 Single Stage Trigger - Flat - Dtom Special Edition
Wilson Combat AR-15 Starburst Gunfighter Pistol Grip Black
Strike Industries Ambidextrous Magazine Release, Black - ARAMBIMRBK
Aero Precision AR-15 Breach Charging Handle Ambidextrous Small Levers
Phase 5 Tactical AR-15 90 Degree Ambi Safety Selector Black
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 3 →Builds in the community that include the Spike's Tactical Spider 9mm Ar-15 Lower - Colt
| Build | Parts | Total |
|---|---|---|
 | 17 | $748.14 |
 | 16 | $1569.52 |
 | 18 | $736.62 |
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