AR-Stoner Barrel AR-15 5.56x45mm NATO M4 Contour 1 in 9" Twist 16" Chrome Moly with A2 Front Sight Phosphate

Product #: 155743 AR-Stoner #: CBAM416055603

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Product Information

This AR-Stoner M4-Contour AR-15 Barrel is fully chambered and ready for installation onto a host upper receiver. The barrel features a true 5.56x45mm NATO Chamber for use with both commercial and military surplus ammunition, while the 1 in 9" Twist Rifling is capable of stabilizing light to medium weight projectiles of up to about 69 grains. The barrel's M4 Contour sheds excess weight and bulk, and comes complete with the military standard M203 cut. This barrel is an excellent choice for a low budget, general purpose AR rifle build that's perfectly suited for use at the range, in a 3-Gun match, or in the field pursuing game. Barrel nut, handguard cap, fixed front sight base assembly, barrel extension, and locator pin are included and factory installed.

Technical Information:
  • Length: 16"
  • Material: 4140 Chrome Moly Steel
  • Contour: M4
  • Chamber: 5.56x45mm NATO
  • Twist Rate: 1 in 9"
  • Chrome Lined: No
  • Finish: Manganese Phosphate (Parkerized)
  • M4 Feed Ramps: Yes
  • Muzzle Thread Pattern: 1/2"-28
  • Gas Port Location: Carbine
  • Exterior Diameter at Gas Port: 0.750"
  • Extras: Front Sight Tower, Barrel Nut, Handguard Cap



Note: The front sight tower does not include a front sight post, front sight detent or spring, these parts will need to be purchased seperately.
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