Spikes Tactical Spike’s Tactical Crusader AR-15 Rifle Lower Build Kit, SOPMOD Style Collapsible Stock

Part Number: S-PI-R-LR15-66180

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Spikes Tactical Spike’s Tactical Crusader AR-15 Rifle Lower Build Kit, SOPMOD Style Collapsible Stock

On sale ~~$198.99~~ $149.99

Retail Price:$198.99

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Spike's Tactical Crusader AR-15 Lower Build Kit - SOPMOD Collapsible Stock

This is a complete lower build kit built around. Spike's Tactical. Crusader STLS022 lower receiver paired with a SOPMOD collapsible stock. The kit includes a Davidson. Defense 31-piece lower parts kit, heavy-duty 6-position buffer tube, standard carbine buffer and spring, and all hardware needed to complete your lower assembly. The. Crusader lower features hard coat anodized aluminum construction with distinctive engraving, including the iconic. Crusader shield and selector markings that read "PAX PACIS," "BELLUM," and "DEUS VULT" (with. English translations on the opposite side).

Key Features

Spike's Tactical Crusader STLS022 lower receiver with hard coat anodized finish
Davidson Defense 31-piece mil-spec lower parts kit with complete fire control group
SOPMOD style collapsible stock with dual integrated storage compartments
Integrated QD sling mounting points with QPQ nitrided metal hardware
Davidson Defense heavy-duty 6-position carbine buffer tube with standard recoil buffer and spring
Extended cheek-weld surface and textured non-slip buttpad
Mil-spec A2 pistol grip with hardware included
US Tactical mil-spec receiver end plate and Davidson Defense castle nut

Perfect For

Builders looking for a complete lower assembly with iconic Spike's Tactical branding
Shooters who want adjustable length of pull and integrated storage for accessories
Tactical builds prioritizing QD sling compatibility and cheek-weld support
AR-15 platforms requiring standard mil-spec component compatibility

SOPMOD Stock Configuration

The SOPMOD style collapsible stock delivers adjustable length of pull across six positions on the carbine buffer tube. Dual storage compartments built into the stock body let you carry small essentials without adding external gear. The integrated QD sling mounting points accept standard QD swivels, and the extended cheek-weld surface supports consistent sight picture whether you're running optics or iron sights. The textured release lever and padded buttpad make transitions smooth and comfortable during extended shooting.

Crusader Lower Receiver Design

Spike's Tactical engineered the. Crusader STLS022 from 6061 aluminum with hard coat anodized finish for durability and corrosion resistance. The lower accepts standard AR-15 pattern magazines, mil-spec fire control components, and buffer system parts without modification. The distinctive. Crusader shield engraving and selector markings make this lower instantly recognizable on the range. Multi-caliber marking on the receiver means this lower works with standard .223/5.56 uppers as well as other compatible AR-15 caliber platforms.

Complete Lower Parts Kit

The. Davidson. Defense 31-piece lower parts kit includes everything needed to complete your lower receiver. You get a standard curved mil-spec trigger and hammer, complete disconnector assembly, mil-spec safety selector, magazine catch assembly, bolt catch assembly, all required pins and detents, trigger guard, buffer retainer, and the full spring set. The kit uses a combination of steel, aluminum, and polymer materials with phosphate and anodized finishes throughout, matching mil-spec standards for reliability and longevity.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included.

Specifications

Platform: AR-15

Lower Receiver: Spike’s Tactical Crusader STLS022 Lower Receiver

Lower Receiver Model: Crusader STLS022

Lower Receiver Caliber Marking: Multi-Caliber

Lower Receiver Material: Aluminum

Lower Receiver Finish: Hard Coat Anodized

Lower Receiver Color: Black

Lower Receiver Magazine Compatibility: Standard AR-15 Pattern Magazines

Lower Receiver Fire Control Compatibility: Standard AR-15 Pattern Components

Lower Receiver Buffer System Compatibility: Standard AR-15 Receiver Extension Components

Lower Receiver Grip Compatibility: Standard AR-15 Pistol Grips

Lower Receiver Engraving: Crusader Shield / Cross Logo

Lower Receiver Selector Markings: “PAX PACIS,” “BELLUM,” and “DEUS VULT”

Opposite-Side Selector Markings: “PEACE,” “WAR,” and “GOD WILLS IT”

Lower Receiver Manufacturer: Spike’s Tactical

Manufacturer Part Number: STLS022

Lower Receiver UPC: 855319005075

Lower Receiver Weight: 0.75 lb

Lower Parts Kit: Davidson Defense Complete Mil-Spec AR-15 Lower Parts Kit

Lower Parts Kit Piece Count: 31 Pieces

Fire Control Group: Complete Mil-Spec Fire Control Group

Trigger: Standard Curved Mil-Spec Trigger

Hammer: Mil-Spec Hammer

Disconnector: Included

Safety Selector: Mil-Spec Safety Selector

Trigger & Hammer Pins: Included

Magazine Catch Assembly: Included

Magazine Release Button: Included

Bolt Catch Assembly: Included

Pivot Pin: Included

Takedown Pin: Included

Trigger Guard: Included

Buffer Retainer: Included

Detents: Safety Selector, Pivot Pin, and Takedown Pin Detents Included

Springs: Complete Lower Parts Kit Spring Set Included

Pistol Grip: Mil-Spec A2 Pistol Grip

Pistol Grip Color: Black

Grip Hardware: Grip Screw and Washer Included

Lower Parts Kit Material Composition: Steel, Aluminum, and Polymer

Lower Parts Kit Finishes: Phosphate and Anodized

Buffer Tube: Davidson Defense Heavy-Duty 6-Position Carbine Receiver Extension

Buffer Tube Type: Mil-Spec Carbine

Buffer Tube Material: 6061 Aluminum

Buffer Tube Construction: Heavy-Duty Machined Aluminum

Buffer Tube Finish: Type II Anodized

Buffer Tube Color: Black

Buffer Tube Profile: Mil-Spec Diameter Carbine Receiver Extension

Buffer Tube Adjustment Positions: 6

Buffer Tube Outer Diameter: 1.145"

Buffer Tube Inner Diameter: 1"

Buffer Tube Length: 7.15"

Buffer Tube Weight: 3.8 oz.

Buffer Tube Stock Compatibility: Mil-Spec Diameter Adjustable Carbine Stocks

Buffer: Standard AR-15 Carbine Recoil Buffer

Buffer Weight: 3 oz.

Buffer Body Material: 6061 Aluminum

Buffer Internal Weights: Steel

Buffer Tip: Polymer Impact Pad

Buffer Spring: Standard AR-15 Carbine Recoil Spring

Buffer Spring Origin: Made in USA

Receiver End Plate: US Tactical AR-15/M16 Mil-Spec Receiver End Plate

Castle Nut: Davidson Defense AR-15 Mil-Spec Carbine Castle Nut

Castle Nut Color: Black

Stock: SOPMOD Style AR-15 Collapsible Stock with Dual Storage Compartments

Stock Platform Compatibility: AR-15 / M4-Style Carbine

Stock Type: Collapsible / Adjustable Buttstock

Stock Style: SOPMOD Style

Stock Buffer Tube Compatibility: Mil-Spec Carbine Buffer Tube

Stock Material: Nylon-Reinforced Polymer

Stock Color: Black

Stock Finish: Matte Black

Stock Configuration: Collapsible / Adjustable

Stock Adjustment Type: Multi-Position Collapsible

Stock Adjustment Control: Oversized Textured Release Lever

Stock Length of Pull: Adjustable Based on Buffer Tube Position

Stock Cheek Weld: Extended SOPMOD-Style Cheek Rest

Stock Profile: Wide SOPMOD-Style Body with Enhanced Cheek Surface

Stock Storage Compartments: Dual Integrated Storage Compartments

Stock Storage Access: Rear-Accessible Storage Compartments with Individual Caps

Stock QD Sling Mounts: Integrated QD Sling Mounting Points

Stock QD Hardware Material: QPQ Nitrided Metal

Stock Sling Compatibility: QD Sling Swivels and Integrated Sling Slots

Stock Buttpad: Padded Rear Buttpad

Stock Buttpad Texture: Textured Non-Slip Surface

Stock Body Design: Reinforced Triangular Support Structure

Stock Construction: Lightweight Reinforced Polymer Body with Metal QD Hardware

Stock Primary Features: Adjustable Length of Pull, Dual Storage Compartments, Integrated QD Sling Mounts, Extended Cheek-Weld Surface, and Textured Rear Buttpad

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Spikes Tactical Spike’s Tactical Crusader AR-15 Rifle Lower Build Kit, SOPMOD Style Collapsible Stock

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Details

Spike's Tactical Crusader AR-15 Lower Build Kit - SOPMOD Collapsible Stock

Key Features

Perfect For

SOPMOD Stock Configuration

Crusader Lower Receiver Design

Complete Lower Parts Kit

Specifications

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