Home / AR Upper Parts / AAT Black Hole Carbine Gas Tube AAT Black Hole Carbine Gas Tube PRODUCT DESCRIPTION Carbine length gas tube. $21.99 AAT Black Hole Carbine Gas Tube quantity Add to cart Category: AR Upper Parts Tags: carbine, Gas Tube Product ID: 7415 Specifications Related products TIN COATED PISTOL LENGTH GAS TUBE $69.99 View Product AAT anodized dust cover $31.99 View Product Sale! AAT 45° IRON SIGHTS $99.99 $44.99 View Product Tin Coated carbine length gas tube $69.99 View Product