Would tend to agree with this statement. I have three SBR'd AR lowers, two have dedicated 5.56 uppers, the third is a PSA lower that plays host to a budget 8.5" 300 BLK upper, a 9.25" AR-22 upper, and any number of other "toy" uppers.The Annoyed Man wrote:[
IF I were to build another, I'd do it on the cheap. YMMV.
All that said, you can build a very nice 300 BLK upper anymore without breaking the bank. Looking forward to seeing the finished product.