Monk Customs M4 Outer Barrel 'HELIX' AAP Guide Rods Thanks to this streamline

Thanks to this streamline

allow for tighter cornering and cycle extremely fast

giving each one a distinctive metallic hue — and a conscience

Black Guide Plug - Part Number: H51-33

Improved gas efficiency and recoil response

Monk Customs M4 Outer Barrel 'HELIX' AAP Guide Rods Thanks to this streamlineThis is Monk's latest addition to the world of M4 Outer Barrels. The unique and stylish twisted helix design stands out beautifully, especially when used in combination with a Monk style skeletonized hand guard! The clever O ring addition makes sure the inner barrel is always positioned in the center of the Helix Outer Barrel and sits tight! These outer barrels are 6 inches in length. * These will fit the Article one with the Red Engines, not with the