DTT AR-15 Rifle Lower Build Kit, Rare Breed FRT-15L3, SOPMOD Style Collapsible Stock

DTT AR-15 Rifle Lower Build Kit - Rare Breed FRT-15L3 Forced Reset Trigger and SOPMOD Style Collapsible Stock

The DTT AR-15 Rifle Lower Build Kit combines a 7075-T6 aluminum mil-spec AR-15 lower receiver with the Rare Breed FRT-15L3 Forced Reset Trigger and a SOPMOD style collapsible stock. The lower features a Type III hardcoat anodized black finish, low shelf M16 cut trigger pocket, and ambidextrous pictogram markings. A full-auto compatible bolt carrier group is required for the FRT-15L3 and is not included.

Key Features

• 7075-T6 aluminum AR-15 mil-spec pattern lower receiver
• Type III hardcoat anodized black finish
• Low shelf M16 cut trigger pocket
• Ambidextrous pictogram markings, Safe, Semi, and Full Auto, engraved on both sides
• Standard AR-15 and STANAG magazine compatible
• Rare Breed FRT-15L3 Forced Reset Trigger
• Three function modes: Safe, Semi, and Forced Reset
• Ambidextrous 3-position safety selector
• Drop-in design for mil-spec AR-15 lowers
• 7075 anodized aluminum and heat-treated 4140 steel trigger components
• Anti-walk pins and anti-rotation design
• Full-auto compatible BCG required, not included
• SOPMOD style collapsible stock in nylon reinforced polymer, black
• Collapsible and adjustable length
• Integrated storage compartments
• Integrated ambidextrous QD sling mounts with QPQ nitrided metal hardware
• Mil-spec heavy-duty 6-position aluminum buffer tube
• Sound Mitigation H3 buffer at 5.6 oz

Perfect For

• AR-15 rifle builders sourcing a lower build kit with a forced reset trigger and collapsible SOPMOD style stock
• Builders completing a standard mil-spec AR-15 lower receiver
• Competitive shooters adding the Rare Breed FRT-15L3 to an AR-15 rifle build
• Builders looking for an integrated storage and QD sling capable stock with an H3 sound mitigation buffer

DTT AR-15 Lower Receiver

The lower receiver is 7075-T6 aluminum with a Type III hardcoat anodized black finish. It follows the AR-15 mil-spec receiver pattern with a low shelf M16 cut trigger pocket and standard AR-15 and STANAG magazine compatibility. The ambidextrous pictogram markings are engraved on both sides of the receiver for Safe, Semi, and Full Auto selector positions, serving as the serialized foundation for the build.

Rare Breed FRT-15L3 Forced Reset Trigger

The Rare Breed FRT-15L3 is a drop-in forced reset trigger built from 7075 anodized aluminum and heat-treated 4140 steel. It offers three function modes through the ambidextrous 3-position safety selector: Safe, Semi, and Forced Reset. Anti-walk pins and an anti-rotation design secure the trigger group in the lower receiver. A full-auto compatible bolt carrier group is required for Forced Reset mode and is not included.

SOPMOD Style Stock and Buffer System

The SOPMOD style collapsible stock is nylon reinforced polymer in black with an adjustable length configuration, integrated storage compartments, and integrated ambidextrous QD sling mounts with QPQ nitrided metal hardware. The stock pairs with the included mil-spec heavy-duty 6-position aluminum buffer tube, and the Sound Mitigation H3 buffer at 5.6 oz covers the buffer system component for the lower completion build.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws.