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Spike’s Tactical Crusader AR-15 Pistol Lower Kit with FDE SBA5 Brace

Part Number: S-PI-P-LR15-66194
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Spike’s Tactical Crusader AR-15 Pistol Lower Kit with FDE SBA5 Brace
On sale $304.99 $229.99
Retail Price:$304.99
Your Savings:$75.00(25%)
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Availability: In Stock

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Spike's Tactical Crusader AR-15 Pistol Lower Build Kit with SBA5 Brace

This is a complete AR-15 pistol lower build kit built around Spike's Tactical Crusader STLS022 receiver paired with the SB Tactical SBA5 adjustable stabilizing brace in FDE. The kit includes a 31-piece Davidson Defense mil-spec lower parts kit, heavy-duty buffer tube, buffer, recoil spring, castle nut, end plate, and mil-spec A2 pistol grip. Everything needed to complete a lower receiver except the serialized lower itself, which you'll need to source separately.

Key Features

  • Spike's Tactical Crusader STLS022 lower receiver with hard coat anodized finish and crusader shield engraving
  • SB Tactical SBA5 adjustable stabilizing brace in FDE with integrated QD sling socket
  • Davidson Defense 31-piece mil-spec lower parts kit with complete fire control group
  • Davidson Defense heavy-duty 6061 aluminum buffer tube with 6-position adjustment
  • Standard AR-15 carbine buffer and recoil spring, made in USA
  • Mil-spec castle nut and receiver end plate
  • Mil-spec A2 pistol grip in black with hardware included
  • Multi-caliber marked lower receiver compatible with standard AR-15 pattern magazines
  • Selector markings include PAX PACIS, BELLUM, and DEUS VULT with English translations on opposite side

Perfect For

  • Builders creating a compact AR-15 pistol platform
  • Those wanting a quality Spike's Tactical receiver with professional engraving
  • Shooters who prefer adjustable brace setups for different shooting positions
  • Budget-conscious builders who want mil-spec reliability without premium pricing
  • FDE color matching builds

Crusader Receiver Design

Spike's Tactical Crusader receivers are known for their distinctive crusader shield engraving and quality hard coat anodized finish. The STLS022 lower is multi-caliber marked, meaning it works with standard AR-15 pattern magazines and fire control components across different caliber builds. The selector markings add character while maintaining full mil-spec functionality. This is a stripped receiver paired with complete mil-spec components, not a finished firearm.

SBA5 Brace and Adjustability

The SB Tactical SBA5 is a compact, adjustable stabilizing brace designed for AR pistol platforms. It features a broad stabilizing surface with an adjustable nylon strap and integrated QD sling socket for quick attachment points. The brace mounts to the included Davidson Defense heavy-duty buffer tube via the standard mil-spec carbine receiver extension interface. Six adjustment positions let you dial in the fit for different shooting positions or gear setups. The FDE finish matches the lower receiver aesthetics.

Complete Lower Build Kit Contents

This kit includes everything to complete a lower receiver assembly: the Spike's Tactical Crusader lower receiver, 31-piece Davidson Defense mil-spec lower parts kit containing the complete fire control group, hammer, trigger, disconnector, safety selector, magazine catch assembly, bolt catch assembly, all required pins and springs, trigger guard, buffer retainer, and detents. Also included are the heavy-duty buffer tube, standard carbine buffer, recoil spring, castle nut, receiver end plate, mil-spec A2 pistol grip, and the SBA5 brace. Lower receiver not included.

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 Brace Compatibility: Mil-Spec Diameter Adjustable Stabilizing Braces

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

Pistol Brace: SB Tactical SBA5 Adjustable Pistol Stabilizing Brace

Brace Brand: SB Tactical

Brace Model: SBA5

Brace Type: Adjustable Pistol Stabilizing Brace

Brace Platform Compatibility: AR-Pattern Platforms Using a Mil-Spec Carbine Receiver Extension

Brace Buffer Tube Compatibility: Standard Mil-Spec Carbine Buffer Tube

Brace Adjustment: Adjustable

Brace Mounting Interface: Mil-Spec Carbine Receiver Extension

Brace Attachment Style: Slide-On Adjustable Carbine-Style Mount

Brace Material: High-Strength Polymer

Brace Color: FDE

Brace Finish: Flat Dark Earth

Brace Style: Compact Carbine-Style Stabilizing Brace

Brace Stabilizing Strap: Adjustable Nylon Strap

Brace Strap Color: Black

Brace Sling Mount: Integrated QD Sling Socket

Brace Profile: Compact, Low-Profile Adjustable Design

Brace Construction: Reinforced Polymer Construction

Brace Adjustment Control: Integrated Adjustment Lever

Brace Rear Design: Broad Stabilizing Surface with Integrated Strap

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

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