Bomb proof complete upper receiver - Daniel Defense M4A1 FSP 14.5in 5.56 Nato Upper Receiver Group

Back in 2012, I remember being in the outback's of RC South in Maiwand Afghanistan. The BlockII upper made its appearance in our Combat Outpost. It was a sturdy upper with the Daniel D rails. I ordered this upper with nostalgia from days gone past. When it arrived at my door step I was worried that I should've order the flat top verson. I took the upper to the range and without any issues I was engaging targets just like I used too in days past. The FSP made it easier for me to pick up and dail on my targets.