Mil-Spec M-4 Rifle Kit

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16" ARM-4 Chrome Lined, 4150, 1x7 Twist, F Sight Base, M-4 Feed Ramps, Flat Top A-4 Kit with Bolt, Bolt Carrier and Charging handle.

16" ARM-4 Chrome Lined, 4150 steel, 1x7 Twist, F Sight Base, M-4 Feed Ramps, 6 position M-4 style buttstock, Magnafluxed barrel, Lower Parts Kit, Flat Top Kit.

Barrel Type: 4150 Chrome Vanadium Steel with M-4 Feed Ramp Barrel Extension Chambered in 5.56mm NATO
Barrel Profile:  16” Gov’t Profile ARM-4 Chrome Lined 1x7
Flash Hider:  Standard A-2(1/2x28tpi)
Barrel Twist:  1x7 Button Rifled RH Twis
Handguard:  Double Heat Shielded M-4 Type Oval
Bolt:  Shot Peened, MP Batch Tested
Bolt Carrier:  Standard Semi-Auto black Phosphate Coated with Chrome lined bolt cylinder
Upper:  Flattop With Feed Ramps
Front Sights/Gas Blocks:  "F" Marked front sight base
Trigger Group: Standard U.S. Made Semi-Auto Parts
Pistol Grip:  Standard A-2
Buttstock Assembly: Commercial or Mil-Spec diameter tubes