This AR-15 lower build kit pairs a 7075-T6 forged aluminum receiver with a Rare Breed FRT-15L3 forced reset trigger and SOPMOD style collapsible stock. The lower receiver features Type III hard coat anodized finish in black and comes serialized. The kit delivers the core components needed to complete a lower receiver, giving you control over the upper assembly and final configuration.
The Rare Breed FRT-15L3 uses a forced reset mechanism that automatically resets the trigger after each shot, allowing faster firing rates while maintaining full compliance with federal semi-automatic classification. Each round still requires a separate trigger pull, but the reset happens mechanically without manual finger movement. The trigger features a 3-position selector with Safe, Semi-Auto, and Forced Reset modes, giving you control over how you want to shoot.
The included SOPMOD style stock adjusts to multiple positions for different shooting preferences and body types. Built from nylon reinforced polymer, it's lightweight without sacrificing durability. The stock includes storage compartments for small items like batteries or cleaning tools, adding practical functionality to your setup.
The 7075-T6 forged aluminum construction provides the strength and rigidity required for reliable operation across extended shooting sessions. Type III hard coat anodizing creates a protective finish that resists corrosion and wear. The receiver comes serialized and ready to pair with any compatible AR-15 upper assembly. As a lower build kit, this does not include a buffer tube, buffer, recoil spring, or upper assembly components.
Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included. Buffer tube, buffer, and recoil spring are not included.
Platform: AR-15
Lower Receiver Material: 7075-T6 Forged Aluminum
Lower Receiver Finish: Type III Hard Coat Anodized
Lower Receiver Color: Black
Serialized: Yes
Trigger Name: Rare Breed FRT-15L3™ Forced Reset Trigger
Trigger Type: Forced Reset Trigger (FRT) for AR-15
Trigger Features: 3-position (Safe / Semi / Forced Reset) ambidextrous safety selector
Materials / Construction: 7075 anodized aluminum and heat-treated 4140 steel
Trigger Performance: Forced reset system mechanically resets the trigger after each shot
Stock Name: SOPMOD Style Collapsible Stock
Stock Color: Black
Stock Material: Nylon Reinforced Polymer
Stock Type: Collapsible
Stock Storage Compartments: Yes
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