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Introduction The Spike's Tactical ST-15 upper line-up now has 300BLACKOUT. This Round's Popularity is growing at a Tremendous Rate. As Always Spike's Tactical Products are backed by the Spike's Tactical Lifetime Warranty. NOTE: Some states and areas, like California, New York, New Jersey, Connecticut, Massachusetts require certain options and modifications. Those features can be added to your order under the Services & Tools section. Please check with your local FFL if you have questions regarding legality as we cannot be responsible for laws in every state or county.
NOTE:Ammo shown is for Reference only. Spike's Tactical does Not carry ammo. This is a sample of what is available for this upper.#1- 55gr 5.56 (supersonic,shown for size comparison), #2- 115gr 6.8 Siverstate Armory (supersonic,shown for size comparison), #3- 110gr 300 Whisper Hornady Vmax (supersonic), #4- 140gr 300BLK Lehigh Defense (supersonic), #5- 220gr 300BLK Remington OTM (subsonic), #6- 208gr 300 Whisper Hornady Amax (subsonic)
Features
Included
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 5.3.1.2 MIL-STD-171 Phosphate Finish * Mil-Spec Forward Assist Assembly with Tool Steel Pawl and 5.3.1.2 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 LW-50 Stainless * Raw Barrel Steel is Magnetic Particle Inspected * Barrels are Stress Relieved * Mil-Spec M4 Barrel Extension with Nickel Boron Finish * 300 BLACKOUT chamber * All Chambers are Individually Checked for Head Spacing * All Barrels are Individually Magnetic Particle Inspected (MPI) * 5/8X24 Thread Pitch * Threads are Cut Concentric to the Bore * FSB is Pinned to the Barrel and Vertically Aligned * Rubber Coated Front Sling Loop * Mil-Spec 303 Stainless Steel Gas Tube enhanced with Melonite Finish * Muzzle Devices are Properly Timed and installed with Crush Washer Fore End Group * M4 Double Heatshield Handguards * F Marked Front Sight Base with Milspec Phosphate Finish * Steel Milspec Barrel Nut with 5.3.1.2 MIL-STD-171 Phosphate Coating Bolt Carrier Group * Mil-Spec 8620 Tool Steel M16 Bolt Carrier with Shrouded Firing Pin * Carrier is 5.3.1.2 MIL-STD-171 Phosphate Coated inside and out with 1.2.2.2 MIL-STD-171 Hard Chrome Bore * Laser Engraved with ST Spider Logo * Mil-Spec Tool Steel Carrier Key * Carrier Key is 5.3.1.2 MIL-STD-171 Phosphate Coated inside and out with 1.2.2.2 MIL-STD-171 Hard Chrome Bore * Carrier Key is installed with Grade 8 Hardware and Properly Staked * Bolt is CNC Machined from Carpenter-158 Steel * Bolt is 5.3.1.2 MIL-STD-171 Phosphate 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, 5.3.1.2 MIL-STD-171 Phosphate Coated, Fitted with a Mil-Spec Black Extractor Spring Insert and Mil-Spec Viton O-Ring * Mil-Spec Firing Pin with 1.2.2.2 MIL-STD-171 Hard Chrome Finish * Mil-Spec Cam Pin with 5.3.1.2 MIL-STD-171 Phosphate Coating * Mil-Spec Firing Pin Retaining Pin with 5.3.1.2 MIL-STD-171 Phosphate Coating
This product was added to our catalog on Friday 20 January, 2012.
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