SPIKE'S TACTICAL - LOWER PARTS KIT 556 W/O TRIGGER GROUP

SPIKE'S TACTICAL - LOWER PARTS KIT 556 W/O TRIGGER GROUP

Spike's Tactical
MPN:
SLPK100
UPC:
855319005419
$40.50 - $44.99
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Description

The Spike's Tactical Lower Parts Kit (SLPK100) gives AR-15 builders everything they need to complete a lower receiver — minus the trigger group — so you can pair it with your preferred fire control group and finish your build with confidence.

  • Chambered for .223 Rem / 5.56 NATO AR-15 platform builds
  • Excludes trigger group, letting you choose your own FCG
  • Billet machined magazine catch button for a precise, positive feel
  • Aluminum trigger guard with spring-loaded detent included
  • A2 pistol grip with 1/4x28 Allen cap screw and star lock washer
  • Complete hardware set: pins, springs, detents, and plungers all included

Who This Is For

This kit is ideal for AR-15 enthusiasts building from an 80% lower or stripped lower receiver who already have a preferred trigger group — whether that's a single-stage, two-stage, or drop-in cassette — and want a quality, complete set of lower parts from a trusted American brand. It's equally well-suited for gunsmiths stocking reliable replacement components and experienced builders who don't want to source individual small parts separately.

Spike's Tactical Lower Parts Kit SLPK100 components laid out

Specifications

BrandSpike's Tactical
Part NumberSLPK100
Caliber / Platform.223 Rem / 5.56 NATO (AR-15)
Includes Fire Control GroupNo
Trigger GuardAluminum, Spring-Loaded Detent
Pistol GripA2 Style
Mag Catch ButtonBillet Machined
Hardware IncludedPins, Springs, Detents, Plungers
Country of OriginUSA

Frequently Asked Questions

What parts are NOT included in this lower parts kit?

This kit intentionally omits the fire control group (FCG) — meaning no trigger, hammer, disconnector, or associated trigger and hammer springs. This allows you to select your own preferred FCG, whether it's a mil-spec drop-in group, a precision two-stage trigger, or an aftermarket cassette unit. All other essential lower parts are included.

Is this kit compatible with standard mil-spec AR-15 lowers?

Yes. The Spike's Tactical SLPK100 is designed to fit any standard mil-spec AR-15 lower receiver, including forged, billet, and 80% lowers machined to mil-spec dimensions. All components follow standard AR-15 specifications, so compatibility with third-party lowers is excellent.

Do I need any special tools to install this lower parts kit?

Basic AR-15 armorer's tools are recommended for a proper installation — specifically a lower vise block, roll pin punch set, and a non-marring hammer. While an experienced builder may be able to assemble the kit with minimal tooling, using proper armorer's tools helps prevent damage to components and ensures everything seats correctly.