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

Delta Team Tactical DTT FDE AR-15 Lower Build Kit, Rare Breed FRT-15L3, SOPMOD Style Collapsible Stock

The Delta Team Tactical DTT FDE AR-15 Lower Build Kit is a lower completion package built around a forged 7075-T6 aluminum lower receiver with a Cerakote finish in Flat Dark Earth. The receiver features a low shelf trigger pocket with M16 cut and ambidextrous pictogram selector markings engraved on both sides in Safe, Semi, and Full Auto positions. The kit includes a complete lower parts kit with a Rare Breed FRT-15L3 forced reset trigger in place of the standard fire control group, along with a 3-position ambidextrous safety selector and a Mil-Spec A2 grip in black. The Rare Breed FRT-15L3 is a drop-in forced reset trigger constructed from 7075 anodized aluminum and heat-treated 4140 steel, featuring anti-walk pins, a secure anti-rotation design, and a 3-position selector covering Safe, Semi, and Forced Reset. A full-auto compatible bolt carrier group is required for proper function and is not included. The buffer system consists of a Mil-Spec heavy-duty 6-position carbine buffer tube in 6061-T6 aluminum and a Sound Mitigation Buffer H3 at 5.6 oz, which integrates the buffer and recoil spring function into a single self-contained unit. A Mil-Spec metal receiver end plate and a notched steel castle nut in phosphate finish round out the rear hardware. The SOPMOD style collapsible stock in black nylon reinforced polymer with QPQ nitrided metal hardware, a 6-position adjustable design, integrated QD mounts, and a storage compartment is included.

Key Features

• Forged 7075-T6 aluminum lower receiver, Cerakote FDE finish
• Low shelf trigger pocket, M16 cut
• Ambidextrous pictogram selector markings, Safe, Semi, Full Auto, engraved both sides
• Standard AR-15 and STANAG magazine compatible
• Complete lower parts kit
• Rare Breed FRT-15L3 forced reset trigger, 7075 anodized aluminum and heat-treated 4140 steel, anti-walk pins, anti-rotation design, 3-position Safe, Semi, Forced Reset
• 3-position ambidextrous safety selector
• Mil-Spec A2 grip, black
• Mil-Spec heavy-duty 6-position carbine buffer tube, 6061-T6 aluminum, black
• Sound Mitigation Buffer H3, 5.6 oz, integrated buffer and recoil spring system
• Mil-Spec metal receiver end plate
• Notched steel castle nut, phosphate finish
• SOPMOD style collapsible stock, black nylon reinforced polymer, QPQ nitrided metal hardware, 6-position adjustable, integrated QD mounts, storage compartment
• Full-auto compatible bolt carrier group required, not included

Perfect For

• AR-15 builders sourcing a complete FDE lower build kit with a Rare Breed FRT-15L3 forced reset trigger and SOPMOD style collapsible stock already included
• Shooters building a competitive or training-focused AR-15 who want the trigger, ambidextrous safety selector, and buffer system covered in one lower kit
• Builders who want a SOPMOD style collapsible stock with integrated QD mounts, QPQ nitrided hardware, and a storage compartment paired with a forced reset trigger without sourcing components separately

DTT FDE Lower Receiver

The forged 7075-T6 aluminum lower receiver carries a Cerakote finish in Flat Dark Earth. It features a low shelf trigger pocket with M16 cut and ambidextrous pictogram selector markings engraved on both sides, covering Safe, Semi, and Full Auto positions. The receiver is compatible with standard AR-15 and STANAG magazines.

Rare Breed FRT-15L3 Forced Reset Trigger

The Rare Breed FRT-15L3 is a drop-in forced reset trigger constructed from 7075 anodized aluminum and heat-treated 4140 steel. It features a 3-position selector covering Safe, Semi, and Forced Reset, with anti-walk pins and a secure anti-rotation design. The forced reset system mechanically resets the trigger after each shot. A full-auto compatible bolt carrier group is required for proper function and is not included with this kit.

Buffer System and Rear Hardware

The buffer system includes a Mil-Spec heavy-duty 6-position carbine buffer tube in 6061-T6 aluminum and a Sound Mitigation Buffer H3 at 5.6 oz, integrating the buffer and recoil spring function into a single self-contained unit. The Mil-Spec metal receiver end plate and notched steel castle nut in phosphate finish complete the rear hardware. The SOPMOD style collapsible stock in black nylon reinforced polymer features QPQ nitrided metal hardware, a 6-position adjustable design, integrated QD mounts, and a storage compartment. It pairs with the included Mil-Spec buffer tube and covers the rear stock interface for this lower build kit.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. A full-auto compatible bolt carrier group is required for proper Rare Breed FRT-15L3 function and is not included.