I have 2 bushmaster set ups. 11.5 is ready to go minus the BCG and charging handle Front post needs pined as well 16 inch needs gas tube and BCG and charging handle. Both of these uppers are used and in good condition. Great for your pistol or SBR build... asking for $250 for each one... I will consider trades for pistol or rifles txt me what you got.... 541-613-6539 serious people only... others will be ignored.