Guntec USA AR 9mm Upper Receiver Kit
Ratings & Reviews
Good chance your handguard won’t fit...just sayin
by Matt -
Not so simple to just add your favorite handguard. I can tell you for sure the 5.5” Odin Works does not work AND the 7.5” Aero Precision DOES NOT WORK either. This upper has really been a PITA, I would spend the money on a nicer BCG and Charging handle and run the cheapest M4 upper I could find.