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Spike’s Tactical Crusader AR-15 Rifle Lower Build Kit, Ranger Stock

Part Number: S-PI-R-LR15-66170
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On sale $218.99 $164.99
Retail Price:$218.99
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Spike's Tactical Crusader AR-15 Rifle Lower Build Kit, Ranger Stock

The Spike's Tactical Crusader lower build kit combines a premium stripped receiver with a complete mil-spec lower parts kit, buffer system, and adjustable Ranger stock. This is a fully assembled lower receiver ready to pair with any standard AR-15 upper assembly. The Crusader STLS022 receiver features hard coat anodized aluminum construction with integrated QD sling mounts and distinctive selector markings that reference Spike's Tactical branding philosophy.

Key Features

  • Spike's Tactical Crusader STLS022 stripped receiver with hard coat anodized finish
  • Davidson Defense 31-piece mil-spec lower parts kit with complete fire control group
  • Davidson Defense heavy-duty 6-position carbine buffer tube with USA-made spring
  • Davidson Defense Ranger adjustable carbine stock with integrated QD sling mounts
  • Mil-spec A2 pistol grip and standard curved trigger
  • Multi-caliber marked receiver compatible with standard AR-15 pattern magazines
  • Integrated QD sling attachment points on stock and receiver

Perfect For

  • Builders looking for a quality lower assembly from a respected manufacturer
  • Shooters who want a complete lower with adjustable stock included
  • Those building a carbine-length AR-15 platform
  • Users prioritizing integrated sling mounting solutions

Crusader Receiver Design

The Spike's Tactical Crusader lower receiver stands out with its distinctive engraving and selector markings. The receiver features a Crusader Shield and Cross logo along with three-position selector markings: "PAX PACIS," "BELLUM," and "DEUS VULT" on one side, with English translations "PEACE," "WAR," and "GOD WILLS IT" on the opposite side. The hard coat anodized aluminum construction provides durability while maintaining a professional appearance.

Complete Lower Parts Kit Assembly

This kit includes a Davidson Defense 31-piece mil-spec lower parts kit with all components needed to complete the lower receiver. The fire control group features a standard curved mil-spec trigger and hammer, complete disconnector, and mil-spec safety selector. All pins, springs, detents, and hardware are included. The mil-spec A2 pistol grip comes installed with grip screw and washer.

Buffer System and Stock Configuration

The kit includes a Davidson Defense heavy-duty 6-position carbine buffer tube machined from 6061 aluminum with Type II anodized finish. The system uses a standard AR-15 carbine recoil buffer with aluminum body and steel internal weights, paired with a USA-made carbine recoil spring. The Davidson Defense Ranger stock is an adjustable A-frame carbine profile made from reinforced polymer with an extended molded cheek-weld surface. The stock features integrated QD sling mounts compatible with push-button QD sling swivels and a spring-loaded adjustment lever for multi-position length-of-pull adjustment.

Compatibility and Assembly Notes

This lower receiver is compatible with all standard AR-15 upper assemblies and accepts standard AR-15 pattern magazines. The mil-spec buffer tube accepts mil-spec diameter adjustable carbine stocks. The receiver extension is 7.15 inches long with 1.145-inch outer diameter and 1-inch inner diameter, maintaining standard mil-spec dimensions throughout.

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

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: Davidson Defense AR-15 Ranger Stock

Stock Brand: Davidson Defense

Stock Model: Ranger

Stock Type: Adjustable Carbine Rifle Stock

Stock Platform: AR-15

Stock Buffer Tube Compatibility: Mil-Spec Carbine Receiver Extension

Stock Style: A-Frame Adjustable Carbine Stock

Stock Configuration: Collapsible / Adjustable

Stock Adjustment: Multi-Position Adjustable

Stock Material: Reinforced Polymer

Stock Color: Black

Stock Profile: Lightweight A-Frame Carbine Profile

Stock Cheek Weld: Extended Molded Upper Cheek-Weld Surface

Stock Adjustment Control: Spring-Loaded Adjustment Lever

Stock QD Sling Mounts: Integrated

Stock Sling Compatibility: Push-Button QD Sling Swivels

Stock Rear Sling Attachment: Integrated Sling Slot

Stock Buttpad: Textured Rear Buttpad

Stock Construction: Reinforced Skeletonized Polymer

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