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  3. Spike’s Tactical Crusader AR-15 Rifle Lower Build Kit, Enhanced Stock

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

Part Number: S-PI-R-LR15-66176
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Spike’s Tactical Crusader AR-15 Rifle Lower Build Kit, Enhanced Stock
On sale $205.99 $154.99
Retail Price:$205.99
Your Savings:$51.00(25%)
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Availability: In Stock

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Spike's Tactical Crusader AR-15 Rifle Lower Build Kit, Enhanced Stock

The Spike's Tactical Crusader lower build kit delivers a complete lower receiver assembly with enhanced ergonomics and mil-spec reliability. This kit pairs Spike's Tactical stripped Crusader receiver with a Davidson Defense complete lower parts kit, heavy-duty buffer tube, standard carbine buffer and spring, mil-spec end plate and castle nut, and an adjustable enhanced stock featuring a polymer cheek riser and rubberized recoil pad. The lower receiver is hard coat anodized aluminum with distinctive Crusader Shield engraving and dual-language selector markings. Everything needed to complete a functional lower receiver is included except the upper receiver assembly.

Key Features

  • Spike's Tactical Crusader STLS022 stripped 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, mil-spec hammer, and full fire control group
  • Adjustable polymer cheek riser and elevated cheek-weld surface for improved sight picture
  • Rubberized recoil pad with full-height rear shoulder pad for comfort and control
  • Davidson Defense heavy-duty 6061 aluminum buffer tube with 6-position adjustment
  • Standard carbine recoil buffer and spring with polymer impact pad
  • Integrated QD-style sling socket and rear sling attachment point
  • Mil-spec A2 pistol grip and reinforced tactical polymer stock construction

Perfect For

  • Builders looking for a complete lower assembly without sourcing individual components
  • Shooters wanting enhanced ergonomics with adjustable cheek support and recoil management
  • Tactical and sport shooting applications requiring mil-spec reliability
  • Rifle builders prioritizing quality components from established manufacturers

Enhanced Ergonomic Design

The adjustable polymer cheek riser provides elevated sight picture alignment, reducing fatigue during extended shooting sessions. The reinforced tactical stock construction supports the full-height rubberized recoil pad, which absorbs impact while maintaining a secure shoulder contact point. This combination improves control across various shooting positions and ammunition types.

Complete Lower Parts Kit

The Davidson Defense 31-piece lower parts kit includes all internal components required for a functioning lower receiver. The standard curved mil-spec trigger and hammer provide reliable fire control, while the complete pin and detent set ensures proper assembly. Magazine catch assembly, bolt catch assembly, and safety selector are all included and ready to install.

Mil-Spec Compatibility

The lower receiver accepts standard AR-15 pattern magazines, mil-spec pistol grips, and standard receiver extension components. The 6-position carbine buffer tube works with mil-spec adjustable carbine stocks and provides multiple length-of-pull options. All components use standard AR-15 dimensions and specifications for broad compatibility with upper assemblies and accessories.

Crusader Receiver Features

The Spike's Tactical Crusader lower features distinctive selector markings in English and Latin, including "PAX PACIS" and "PEACE" for safe, "BELLUM" and "WAR" for semi-auto, and "DEUS VULT" and "GOD WILLS IT" for fire mode positions. The Crusader Shield engraving distinguishes this receiver from standard mil-spec options while maintaining full functional compatibility.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included. BCG and charging handle are 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 Stock with Polymer Cheek Riser & Rubberized Recoil Pad

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 Riser Adjustment: Adjustable Height

Stock Cheek Weld: Elevated Adjustable Cheek-Weld Surface

Stock Buttpad: Rubberized Recoil Pad

Stock Buttpad Profile: Full-Height Rear Shoulder Pad

Stock Buttpad Attachment: Integrated / Secured Rear Pad

Stock QD Sling Mount: Integrated QD-Style Sling Socket

Stock Sling Attachment: Integrated Rear Sling Attachment Point

Stock Adjustment Control: Integrated Carbine-Style Adjustment Lever

Stock Frame Design: Reinforced Tactical Support Structure

Stock Ergonomic Features: Adjustable Cheek Riser, Extended Cheek-Weld Surface, and Rubberized Recoil Pad

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

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