Serial # 1852-51998
Cal – 5.56
Ruger lower receiver
Bear Creek Arsenal upper receiver
16.1 inch barrel
M-Lok handguard with top rail
Sig Sauer Romeo5 red dot sight
Laser sight module on a side rail
Adjustable stock
Standard trigger
Functions well
Things to be aware of:
No magazines included
No iron sights
The upper receiver is not the original Ruger unit