My first day on the range was spent zeroing the rifle and then testing for accuracy. Once zeroed, and firing from a rested position (prone, sand bagged), firing sub-MOA groubs was quiet easy. Most of the 3-shot groups fired were less than 3/4" with several 1/2" and two sub-1/4-MOA or less than 1/4" (those end up being three shot one hole groups obviously). Those were the exceptions and not the rule, but for a CQP-style AR weapon, consistently shooting sub-MOA groups is good - especially when you also take into consideration the less-than 15" rifling and 16.1" barrel length overall.
In the course of approximately 250 rounds of firing I experienced no malfunctions. The weapon fed, extracted and ejected clean. The now-seemingly-standard six-position adjustable stock made it easy to shoot with and without any body armor or equipment vest. The adjustable stock makes it easier to maintain a comfortable length of reach / pull as the thickness of armor and gear in front of your shoulder changes with "the mission".
The TR-15 is gas operated so it can get as dirty as other rifles of similar design. I used Federal ammo for all testing and the 8+ magazines worth in the first day on the range wasn't sufficient to cause any malfunctions due to unburned powder, carbon, grit, etc. I was quite pleased with the rifle's performance and used it as the test bed for another review (the FailZero AR-15 Kit review linked below). I look forward to mounting an optic on it and procuring a pop-up rear sight. My sling of preference is the 3-point Swift Sling from BLACKHAWK!. With the sling properly adjusted, if I experience a stoppage with the rifle, I can drop it to hang and go to my sidearm - my 1911 included in the bottom picture accompanying this article.
It would be inaccurate to say that Thor Global Defense Group (Thor GDG) is "new" to the gun manufacturing business because they've been making parts for so long. However, as they branch into making complete weapon systems they go beyond showing "promise". The quality control demonstrated in how "tight" this weapons was built is easy to see in the down-range groups. Any "battle rifle" needs (in my humble opinion) to consistently shoot sub-MOA and this particular rifle averaged 1/2- to 3/4 MOA. When I did my part (basic marksmanship is a perishable skill I need to practice more often) the 1/4-MOA groups show what the rifle is capable of. With retail prices starting at just under $1,000 and law enforcement pricing available upon request, I think we're going to see big things from Thor GDG.