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Spike’s Tactical Crusader AR-15 Rifle Lower Build Kit, Mil-Spec Enhanced Stock

Part Number: S-PI-R-LR15-66175
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Spike's Tactical Crusader AR-15 Rifle Lower Build Kit, Mil-Spec Enhanced Stock

This is a complete lower build kit designed to get your AR-15 platform running. It pairs a Spike's Tactical Crusader lower receiver with a Davidson Defense mil-spec lower parts kit, buffer system, and an enhanced adjustable stock featuring a recoil dampener suspension system. The lower receiver is stripped, so you'll need to source your own upper assembly to complete the rifle.

Key Features

  • Spike's Tactical Crusader STLS022 lower receiver with hard coat anodized finish and crusader shield engraving
  • Davidson Defense 31-piece complete mil-spec lower parts kit with standard curved trigger and mil-spec hammer
  • Davidson Defense heavy-duty 6-position carbine buffer tube with type II anodized finish
  • Standard AR-15 carbine recoil buffer and spring with polymer impact pad
  • Mil-spec enhanced adjustable carbine stock with integrated recoil dampener suspension system
  • Adjustable polymer cheek riser for elevated cheek-weld positioning
  • Integrated QD sling socket and rear sling attachment point
  • Multi-position length-of-pull adjustment for fit customization
  • Rubberized full-height recoil pad for shoulder comfort
  • Mil-spec receiver end plate and castle nut included

Perfect For

  • Builders looking for a complete lower assembly solution
  • Shooters wanting a mil-spec platform with quality components
  • Those prioritizing adjustable ergonomics and recoil management
  • Rifle builds requiring a reliable, proven lower receiver design

Spike's Tactical Crusader Lower Receiver

The Crusader STLS022 is a 7075-T6 aluminum lower receiver finished in hard coat anodize. It features the iconic crusader shield engraving on the magwell and includes selector markings reading "Pax Pacis," "Bellum," and "Deus Vult" on one side with English translations on the opposite side. The receiver accepts standard AR-15 pattern magazines, fire control components, and buffer system parts without modification.

Recoil Dampener Stock System

The included enhanced stock uses an integrated suspension-style recoil management system designed to reduce felt recoil and improve control during shooting. The adjustable polymer cheek riser provides an elevated cheek-weld surface for better sight alignment. The stock collapses across six positions for length-of-pull adjustment and includes a screw-mounted rubberized recoil pad. An integrated QD sling socket and rear attachment point are built into the stock frame.

Buffer System and Lower Parts Kit

The kit includes a Davidson Defense heavy-duty 6-position carbine buffer tube paired with a standard carbine recoil buffer and spring. The 31-piece lower parts kit contains all fire control components: mil-spec curved trigger, mil-spec hammer, disconnector, safety selector, magazine catch assembly, bolt catch assembly, takedown and pivot pins, trigger guard, buffer retainer, and all required detents and springs. The A2 pistol grip is included with hardware.

Complete Lower Assembly Configuration

Lower receiver not included in upper assembly purchases. This kit provides everything needed to complete the lower receiver except the serialized lower receiver itself. You'll need to source a complete upper assembly, charging handle, and bolt carrier group separately to create a functional AR-15 rifle.

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: Mil-Spec Enhanced Adjustable Carbine Stock with Recoil Dampener Suspension System

Stock Type: Adjustable Carbine Rifle Stock

Stock Platform: AR-15

Stock Style: Enhanced Tactical Rifle Stock

Stock Configuration: Collapsible / Adjustable

Stock Buffer Tube Compatibility: Mil-Spec Carbine Buffer Tube

Stock Adjustment: Multi-Position Length-of-Pull Adjustable

Stock Material: Polymer

Stock Color: Black

Stock Profile: Enhanced Tactical Carbine Profile

Stock Construction: Reinforced Polymer Construction

Stock Cheek Riser: Adjustable Polymer Cheek Riser

Stock Cheek Weld: Elevated Adjustable Cheek-Weld Surface

Stock Recoil System: Advanced Recoil Dampener Suspension System

Stock Recoil Dampening: Integrated Suspension-Style Recoil Management

Stock Buttpad: Rubberized Recoil Pad

Stock Buttpad Attachment: Screw-Mounted

Stock Buttpad Profile: Full-Height Padded Rear Shoulder Surface

Stock QD Sling Mount: Integrated QD Sling Socket

Stock Sling Attachment: Integrated Rear Sling Attachment Point

Stock Adjustment Control: Integrated Carbine-Style Adjustment Lever

Stock Frame Design: Skeletonized Reinforced Lower Support Structure

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Check out our Warranty/Returns and Terms and Conditions
Check out our State Restrictions page

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