Caseless,
Hi I posted this thread for Keltec enthusiasts along with some pictures of systems and targets. The Orlites work great but didn't find any issues with any magazines like Colt preban or Armalite. The orlites sometimes do not fall free but they seem to go well with this rifle (polymer with polymer). I found that the keltec (like ARs) will feed very well as soon as the magazines are in good condition and with not too much use. What I do is I test the ones that work well and the ones that do not work well I discard. I also found that simply upgrading the new magpul followers make a huge difference making a Colt work almost as well as an H&K or SIg magazine that are impossible to beat. I have gone through all sort of mags with many thousands of rounds in this and other rifles w/o one single f2f issue other than 2 duds with the wolf cheap junk that I only use for plinkin. Russian ammo in anything else than AKs, SKS should be avoided with, again, a few exceptions like occasional plinkin. In most cases it is not cheaper than surplus NATO that it is much better for any AR based system.
Regarding the accuracy these rifles are more accurate than advertised in many posts.
The target above has many shots below 1" group. I have many more in all sort of weather even better than the above and I will post them.
I have been doing a lot of research with them and this is what I found and you should take this into account when looking for the accuracy potential of your system:
A) Use 5.56 ammo. Federal M183 is a good burn and shows better groups than most .223. Priv PArtizan is also great. (NATO as well). The Keltec loves the new penetrators. In any case it also likes the American eagle 223 and PMC but not that much. In the end the chamber is not a .223 or wylde chamber but a NATO one.
B) Your are right. The rifle is too light to be the most accurate so put some weight on it. This I call meaningful weight... Have the 2 mags loaded in the stock. Maybe some neoprene cheek rest so if you do tactical shooting everything stays in place. Put a scope or/and red dot preferably low footprint. Some folks put a clamp for a tac light or laser but then I don't know how this might impact the harmonics so you have to play with it.
C) The trigger is ok but not great so you need to practice a lot with it. I know some people like to work on them but I don't think that it is necessary if you learn how to 'talk' to it so you build some muscle memory on exactly the instant before it brakes.
D) TAke your time. Do not expect to empty a mag. in 5 seconds and then the follow up shots to be accurate. The same with most ARs unless you have some bull fluted barrel.
E) Put a good brake. Do not use expensive heavy brakes. Use something short and light that will not only will not interfere with the natural accuracy of the rifle but it will improve climb and follow up shots. I consider this a critical part in all my systems and all brakes are custom made to order.
F) In a CQB/Tac role consider the total score and not MOA. The fact that this rifle is so light on the muzzle makes it a great option for fast moving, tactical shooting, quick changing positions and the less inertia due to the lightness will be faster acquisition and in the real life this might be a life saver. This little dandy carbine will cycle 100% reliably in any position including upside down.
Both keltecs in the picture above have been extremely reliable. They are cleaned and well maintained (w/o being too schizophrenic) and handled with ease. They will fire and feed reliable with all sort of ammunition. I avoid Russian 'puffins' rounds unless I am shooting my std AKs. They can take lots of fire w/o the need to clean the 'soot' from the 'chimney'.
For the .308 AKs I only use brass and a good one.
With hard work expect 1.5 to 1 MOA at a slow to moderate rate of fire. I will post more pictures of targets if anyone is interested.
If anyone is shooting so fast that heat build up is one huge concern then we should considering systems with finned and/or heavy barrels or even systems derived from light machine guns like RPK or just go for the SAW. lol!
It is very easy to burn a barrel shooting suppressing fire and it will continue to shoot but it will never will be the same.
Cheers,
E.