Потянув за рукоятку взведения затвора, извлечь из ствольной коробки рукоятку с затворной группой. In contrast to a standard "bull" barrel that is definitely thick its whole length, the M16A2's barrel is only thick ahead of your handguards. The barrel profile underneath the handguards remained similar to the M16A1 for compatibility http://sethlkbrt.blogolenta.com/8675759/chemická-kotva-m16-for-dummies