Spike's Tactical, Complete Upper Receiver, 223 Rem/556NATO, 16" Chrome Lined Barrel, 1:7 Twist, Fits AR Rifles, Flat Top Receiver, A2 Front Sights, Black Finish
Forged Upper Receiver
- 7075 T6 Construction
- Forward Assist
- Ejection Port Door
- Ejection Port Door Spring
- Ejection Port Door Rod
16" Mid Length Barrel
- MIL-B-11595E CMV
- Chrome Lined
- 1/7 Twist Rate
- 1/2 X 28 Thread Pitch for Muzzle
- 5.56 Nato Chamber
- .750 Gas Block Seat
- M4 Feed Ramped Barrel Extension
- Mil-Spec Phosphate Coating
Delta Ring Assembly
- Mil-Spec Barrel Nut
- Delta Ring
- Weld Spring
- Snap Ring
A2 Front Sight Base Pinned
- Sling Swivel
- Front Sight Post
- FSP Detent
- FSP Detent Spring
M4 Handguard
- Double Heat Shield
Carbine Gas Tube
- Black Nitride Inside and Out
- Gas Tube Roll Pin
Charging Handle
- Forged Aluminum
- Mil-Spec Type 3 Coating
Phosphate M16 Complete BCG
- Phosphate Coated
- Laser Engraved with ST Spider logo
- High Pressure Tested (HPT)
- Magnetic Particle Inspected (MPI)
A2 Flash Hider
- 1/2" Crush Washer
Weight: 4lb 2oz
- Manufacturer Part Number:
- STU5025-M4S
- Sub Category:
- Complete Uppers
- Cartridge:
- 5.56x45 Nato
- Barrel Length:
- 16"
- Gas System Length:
- Carbine
- Gas Block Diameter:
- .750″
- Handguard Style:
- A2
- Handguard Length:
- Carbine
- Handguard Material:
- Polymer
- Color:
- Black
