Just finished assembly of the AR-15 I have always wanted. Thanks to Bushmaster and their outstanding Customer Service and quality parts I have my Superlight carbine ready to go. I originally ordered the Superlight upper from Bushmaster. After a two week wait it was delivered. During a close inspection I noticed the finish on the A2 upper was marred. I called Bushmaster and was instantly issued a electronic call tag via UPS NEXT DAY AIR at NO CHARGE. I dropped the upper off at the UPS outlet the next morning. After some contemplation that evening... I decided I wanted to go with the A1 upper with teardrop assist, tactical charging handle, A1 round sight post and A1 flashhider. The next morning I called Bushmaster and they took care of everything I asked without hesitation. In fact they were enthusiastic about my build ideas and the last minute changes. They installed evrything I asked and shipped the upper back to me NEXT DAY AIR.... with NO CHARGE. In 3 days the upper was in my hands and every detail was completed. I am extremely satisfied with this fine rifle, the personel and the gunsmiths at Bushmaster.This is one light, sweet handling black rifle and it is 100% Bushmaster. You get what you pay for. Pay a little more and get the quaility you expect and customer service you can count on...that is Bushmaster.