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Davidson Defense No-Buffer AR-15 Rifle Lower Build Kit, Rare Breed FRT-15L3, SOPMOD Style Collapsible Stock

Part Number: S-PI-R-LR15-37173
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Davidson Defense Rare Breed FRT-15L3 No-Buffer AR-15 Lower Build Kit | 7075-T6 Forged Aluminum | SOPMOD Style Stock | KAK Lower Parts Kit | Ambidextrous Safety

The Davidson Defense No-Buffer AR-15 Rifle Lower Build Kit delivers precision engineering and versatility featuring the Rare Breed FRT-15L3 forced reset trigger and SOPMOD style collapsible stock. Built around a serialized 7075-T6 forged aluminum lower receiver with hardcoat anodized black finish, this kit includes the FRT-15L3 trigger with safe, semi, and forced reset modes, ambidextrous 3-position safety selector, KAK Industry "Lite" lower parts kit with mil-spec A2 grip, and SOPMOD style stock made from nylon reinforced polymer with storage compartments and adjustable length—perfect for custom AR-15 builds, competition shooting, and builders seeking forced reset functionality, lightweight configuration, and complete customization with premium components. Note: This kit does not include a buffer weight. An H3 buffer is recommended for optimal performance with Rare Breed FRT triggers and must be purchased separately.

Key Features:

  • 7075-T6 Forged Aluminum Lower: Mil-spec forged construction with serialized receiver
  • Hardcoat Anodized Black Finish: Enhanced durability and corrosion resistance
  • Rare Breed FRT-15L3 Forced Reset Trigger: 3-position functionality (Safe/Semi/Forced Reset)
  • Ambidextrous 3-Position Safety Selector: Left and right-hand operation for versatile use
  • KAK Industry "Lite" Lower Parts Kit: Complete lower components with mil-spec A2 grip
  • SOPMOD Style Collapsible Stock: Nylon reinforced polymer with storage compartments
  • Adjustable Length: Customizable length of pull for user comfort
  • Full-Auto Compatible BCG Ready: Designed for optimal performance with FA carrier groups
  • NO BUFFER WEIGHT INCLUDED: H3 buffer recommended and sold separately
  • MIL-SPEC AR-15 Compatible: Works with all mil-spec upper receivers
  • Lightweight Configuration: Optimized component selection minimizes overall weight
  • Complete Assembly Kit: All necessary components for lower receiver build

Perfect For:

  • Custom AR-15 builds with forced reset trigger systems
  • Competition shooters seeking advanced trigger control
  • Tactical rifle configurations requiring storage options
  • Enthusiasts upgrading to FRT trigger technology
  • Lightweight AR-15 platform builds
  • Gunsmiths seeking customizable, high-performance components

What's Included & Buffer Requirements: This kit includes the serialized lower receiver, FRT-15L3 trigger group, SOPMOD style stock, buffer tube, KAK Industry "Lite" lower parts kit with mil-spec A2 grip, and all necessary pins and hardware for lower assembly. Buffer weight is NOT included and must be purchased separately. An H3 buffer (5.4oz) is strongly recommended for optimal cycling, reliability, and performance with the Rare Breed FRT-15L3 trigger system. The heavier H3 buffer weight ensures proper timing and function of the forced reset mechanism.

Rare Breed FRT-15L3 Forced Reset Trigger: The Rare Breed FRT-15L3 trigger provides forced reset functionality, offering safe, semi-automatic, and forced reset modes with ambidextrous 3-position safety selector. The forced reset function mechanically resets the trigger during the firing cycle, allowing for faster follow-up shots compared to traditional semi-automatic triggers. Suitable for MIL-SPEC AR-15 lowers and designed to work with full-auto-compatible bolt carrier groups, this trigger system delivers advanced trigger control for competitive and recreational shooting applications while accommodating both left and right-handed shooters.

7075-T6 Forged Aluminum Lower with Premium Components: The 7075-T6 forged aluminum lower receiver provides superior strength compared to 6061 aluminum, utilizing the same material specification as military M4/M16 lower receivers. The serialized receiver ensures legality and compliance, while the hardcoat anodized black finish provides enhanced durability and corrosion resistance. The KAK Industry "Lite" lower parts kit includes all necessary components for lower assembly, with a mil-spec A2 grip providing reliable ergonomics and proven design for comfortable shooting across extended sessions.

SOPMOD Style Stock & Lightweight Configuration: The SOPMOD style collapsible stock, made from nylon reinforced polymer, features storage compartments for batteries, cleaning supplies, or other small items—adding practical functionality to your build. The adjustable length design offers customizable length of pull for user comfort, accommodating shooters of various sizes and shooting styles. This assembly kit operates without a traditional buffer system (buffer weight sold separately), encompassing all necessary components for building a lightweight, customizable AR-15 platform. The combination of lightweight materials and functional design makes this kit ideal for gunsmiths and builders seeking optimal performance with precision engineering and complete versatility.


Disclaimer: Trigger guard style may vary depending on current inventory. This kit does not include a buffer.


Specifications

Product Name: No-Buffer AR-15 Rifle Lower Build Kit

Lower Receiver Brand: Davidson Defense

Lower Receiver Model: AR-15 Custom Engraved Lower Receiver, Black

Lower Receiver Material: 7075-T6 Forged Aluminum

Lower Receiver Finish: Hardcoat Anodized

Lower Receiver Color: Black

Lower Receiver Country of Origin: USA

Serialized: Yes

Lower Parts Kit Brand: KAK Industry

Lower Parts Kit Model: AR-15 “Lite” Lower Parts Kit

Includes Grip: Yes

Grip Model/Style: Mil-Spec A2 Grip

Grip Color: Black

Stock Brand: Davidson Defense

Stock Model: SOPMOD Style Collapsible Stock with Storage Compartments

Stock Material: Nylon Reinforced Polymer

Stock Type: Collapsible, Carbine

Stock Storage Compartments: Yes

Stock Color: Black

Trigger Brand/Model: Rare Breed FRT-15L3 Forced Reset Trigger

Trigger Type: Forced Reset Trigger (FRT)

Trigger Functionality / Modes: Safe / Semi / Forced Reset

Ambidextrous Features: 3-position ambidextrous safety selector

Trigger Installation / Fitment: Drop-in design for MIL-SPEC AR-15 lowers

Required Components: Full-auto-compatible bolt carrier group

Recommended Buffer: H2, H3, or A5 buffer system

Trigger Materials: 7075 anodized aluminum and heat-treated 4140 steel

Manufacturing: Made in USA

Buffer Tube Model: Mil-Spec Heavy-Duty 6-Position Buffer Tube

Buffer Tube Type: Carbine

Receiver End Plate Brand: US Tactical

Receiver End Plate Model: Mil-Spec Receiver End Plate

Receiver End Plate Finish: Phosphate

Receiver End Plate Color: Black

Castle Nut Model: AR-15 Carbine Castle Nut

Castle Nut Color: Black

Recoil Spring Model: AR-15 Carbine Recoil Spring

Recoil Spring Material: Spring Steel

Recoil Spring Length: Standard Carbine Length

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