Spikes Tactical Black Assassin 5.56 14.5″ (16″OAL)


Spikes Tactical Black Assassin 5.56 14.5″ (16″OAL)

$1,925.00 $1,739.00

Available on backorder

SKU: STR5690-S2S Category: Tags: , , ,


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The Spike’s Tactical Black Assassin is a 14.5(16″OAL) Mid-Length Rifle Package We Put Together with the Competitor in Mind. We Put Together our Best Selection of Components That Balance the Fine Line Between Tactical and Competition, Light Weight and Dependibility! The 14.5” Midlength CHF FN barrel with a ST Dynacomp Pinned and Welded Makes for a Very Smooth Shooting Rifle with Very Fast Follow up Shots. We’ve Included our Enhanced Lower Parts Kit with the ST Battle Trigger, ST Billet Trigger Guard, and KNS Anti-Rotational Hammer and Trigger Pins. For this Rifle Package We have Even Upgraded the Enhanced Lower Parts Kit to Include Our ST Modular Ambi Safety Selector (we took the Battle Arms Development Ambi Safety Selector and Coated the Drum with Nickel Boron to Smooth out It’s Operation To The Maximum!). We also Include Our Billet Mag Release Button.
With an Unloaded weight of 6.65lbs and Smooth Shooting of a Mid-Length gas System Topped off with Our Recoil Taming ST Dynacomp, The Black Assassin is a Versatile Rifle at Home on the Competition Flat Range as well as the Two Way Range.
And of Course Each component is backed by the Spike’s Tactical Lifetime Warranty.

NOTE: Check your state & local laws before ordering to ensure that no modifications are required. Compliance options are available under Services & Tools.

NOTE: FFL required for shipment. You must note which FFL will be receiving this item in the Comment box during checkout. Failure to do so will delay your order processing and shipping. If your FFL is not already on file, have them fax a signed copy of their license to sales@beachtactical.com and include your name and order number on the cover sheet.


  • Spike’s Tactical 14.5″,Midlength, CHF, 1:7 Twist, Mil-spec Barrel
  • ST Lo-Profile Gas Block, .750″ Diameter Gas Seat
  • Spike’s Tactical Mil-spec Nickel Boron M16 Bolt Carrier Group
  • 12″ ST S.A.R. 3
  • ST Dynacomp
  • ST Enhanced Lower Parts Kit
  • ST-T2 Tungsten Buffer
  • Magpul CTR Stock w/ Enhanced Butt Pad
  • ST Billet Mag Release Button
  • Norgon Ambi Mag Release
  • MBUS Sights
  • Weight of 6.65 lbs (with no magazine)


  • Magazine: Due to the recent rampant anti-gun campaign, a magazine no longer comes with this rifle. We ask that you go to the Magazine section and choose one that will be compliant for your state.
  • Hard Plastic Carry Case
  • Spike’s Tactical Lifetime Warranty

Upper Specs

Spike’s Tactical M4 Flat Top Upper Receiver

* CNC Machined from a 7075 T6 MIL-H-6088 Forging

* Extended M4 Feed Ramps Machined before Plating

* Mil-Spec 1913 Picatinny Rail

* MIL-A-8625F Type III Class 2 Hardcoat Anodized Finish

* Laser Engraved T-markings

* Laser Engraved ST Spider logo

* Interior MIL-L-46010 Dryfilm Lube

* Mil-Spec Ejection Port Door Assembly with MIL-STD-171 Phosphate Finish

* Mil-Spec Forward Assist Assembly with Tool Steel Pawl and MIL-STD-171 Phosphate Coating

* Forged Mil-Spec Charging Handle with MIL-A-8625F Type III Class 2 Hardcoat Anodized Finish

Barrel Group

* Barrel Steel is Certified MIL-B-11595E Chromoly Vanadium Alloy

* Raw Barrel Steel is Magnetic Particle Inspected

* Barrels are Stress Relieved

* Mil-Spec M4 Barrel Extension with MIL-STD-171 Phosphate Finish

* MIL-STD-171 Hard Chrome Chamber

* MIL-STD-171 Hard Chrome Bore

* 5.56mm Nato chamber

* All Chambers are Individually Checked for Head Spacing Before and After Plating

* All Barrels are Individually High Pressure Tested (HPT) and then Individually Magnetic Particle Inspected (MPI)

* MIL-STD-171 Phosphate Finish on the Barrel Exterior, Including under the Lo-Profile Gas Block

* 1/2×28 Thread Pitch

* ST Dynacomp is permanetly attached for 16″ OAL with a Pin and Weld

* Mil-Spec 303 Stainless Steel Gas Tube enhanced with Melonite Finish

Fore End Group

* 12″ S.A.R.3

* One Piece Free Float Design, Machined From 6061-T6 Aircraft Grade Aluminum

* Barrel Nut Machined From Titanium

* 5 Integral Quick Disconnect Sockets with Type III Hardcoat Anodized Finish

Bolt Carrier Group

* Mil-Spec 8620 Tool Steel M16 Bolt Carrier with Shrouded Firing Pin

* Carrier is Nickel Boron Coated inside and out

* Laser Engraved with ST Spider Logo

* Mil-Spec Tool Steel Carrier Key

* Carrier Key is Nickel Boron Coated inside and out

* Carrier Key is installed with Grade 8 Hardware and Properly Staked

* Bolt is CNC Machined from Carpenter-158 Steel

* Bolt is Nickel Boron Coated inside and out

* All Bolts are Shot Peened per current Mil-Spec Requirements

* All Bolts are Individually High Pressure Tested (HPT) and then Individually Magnetic Particle Inspected (MPI)

* Tool steel Extractor is Shot Peened, Nickel Boron Coated, Fitted with a Mil-Spec Black Extractor Spring Insert and Mil-Spec Viton O-Ring

* Mil-Spec Firing Pin with MIL-STD-171 Hard Chrome Finish

* Mil-Spec Cam Pin with Nickel Boron Coating

* Mil-Spec Firing Pin Retaining Pin with MIL-STD-171 Phosphate Coating

Lower Specs

Spike’s Tactical Lower Receiver

* CNC Machined from a 7075 T6 MIL-H-6088 Forging

* Low Shelf for RDIAS

* Milled Manufacturer Engravings

* Accepts .154″ Diameter Trigger & Hammer Pins

* MIL-A-8625F Type III Class 2 Hardcoat Anodized Finish inside and out

Enhanced Lower Parts Kit Group

* Semi-Auto Lower Parts Kit with Rounded Hammer, Tigger, and Disconnect Coated with Nickel Boron (ST Battle Trigger)

* Ambidextrious Safety

* ST Billet Trigger Guard

* KNS Anti-Rotational Trigger and Hammer Pins

Receiver Extension Group

* 7075 Mil-Spec Receiver Extension (Buffer Tube)

* Receiver Extension is 1.14″ in Diameter, 6 Position

* Receiver Extension is MIL-A-8625F Type III Class 2 Hardcoat Anodized and MIL-L-46010 Dryfilm Lubed inside and out

* Mil-Spec Castle Nut with MIL-STD-171 Phosphate Coating

* Castle Nut is Torqued to 38ft-lb.

* Magpul ASAP Plate is Properly Staked per Mil-Spec Requirement

* ST-T2 Tungsten Heavy Buffer

* Mil-Spec 17-7 Stainless Steel Buffer Spring

* Magpul CTR Stock with Enhanced Butt Pad



Additional information

Weight 6.65 lbs