I have mine in OD green and have the buffer tube issue. Sent an email to O'Dell Engineering and received the free parts to correct the problem. Less than 10 minutes to replace all the parts. I put a Vortex Crossfire red dot on mine. Besides looking good, well built, very accurate, reliable, easy to take apart and clean. To make it look even better, I installed a flash hider and will install a Dlask charging handle in the future. Have fired about 300-400 rounds, I used Blazer high velocity ammo and have no issues at all, but doesn't like Federal Automatch as much. I love the rifle and pretty sure your son will too. Enjoy.
BTW, SFRC have their 15% off sale using the code "HUNT" until Nov. 5. Also free shipping for anything over $249. Notice you are in BC, I bought mine from Reliable and they came just $25 short of matching a sales price in Ontario, so bought local.