The Spike's Tactical Crusader lower is a special series lower featuring a Crusader logo instead of the usual ST Spider logo. Now features unique selector markings! Manufactured from high-strength 7075-T6 forged aluminum and MIL-STD hard coat anodized for extra strength and durability. Precision machining ensures drop-in installation of all mil-spec components! Marked Multi-Cal.

Brand - Spike's Tactical
Caliber / Gauge - Multi-Caliber
Finish - Hardcoat Anodized - Black
Pattern - AR-15
Ambidextrous - No
Billet - No
Take Down / Pivot Pin Type - 0.25 Standard 
Trigger Pin Diameter - 0.154
Assembly - Stripped

FEDERAL FIREARMS LICENSE REQUIRED!! 
Please read disclaimer before ordering. 
Not for sale in CA, CT, MA, MD, NJ, and NY

Check out this product here: http://www.battlecreekarmory.com/product-p/stlr556crm.htm