My upper is a Rock River heavy 16" barreled flattop. Unfortunately, my shooting has been limited to 50-60 yards, so I can't tell you about my long-range accuracy yet, but folks regularly shoot out to 300 yards with 16" tubes.I was wondering if the bullet trajectory and accuracy on a 16" would reach out to 200 yrds. If so, I would not have a problem with a short 16. Does anyone have a rock river rifle? They looked pretty good and were closer to my price range.
It comforts me to know that the military is investing in state-of-the-art weapons sighting systems, such as the ACOG and EOTech holosights.I can only chime in with personal experience with a 14.5 inch barreled M4. I know that with an ACOG equipped M4, I can hit a man sized silhouette 9 out of 10 times at 300 meters...pretty darn accurate if you ask me. Just as accurate as my 20 inch A2. That's my experience...YMMV.
Not to step on Mr. C's extensive knowledge of the subject, but any upper assembly chambered for 5.56 (or .223) should fit on your lower. The only exception I'm aware of is Colt products. Some of thier products use different diameter take-down and pivot pins.Yes, the 6 position stock was another thing I was looking at getting.
Mr.C, will the rock river lower fit any upper receiver or is it limited to just thier receivers?
Correct. Back years ago, Colt tried to be politically correct and changed the diameter of the trigger and hammer pins so that someone couldn't put machine gun parts in the lowers, and also changed the size of the front takedown pin. No one else ever bought in to it.Not to step on Mr. C's extensive knowledge of the subject, but any upper assembly chambered for 5.56 (or .223) should fit on your lower. The only exception I'm aware of is Colt products. Some of thier products use different diameter take-down and pivot pins.
An easy you to do this is to buy either a complete lower with a fixed stock, or to purchase a stripped lower and build it yourself. Either way, you should be able to do this for ~$250 or so.The M4 set up is nice. You'll like it. Quick handling. And although I like the adjustable stock is nice for transporation and for the wife and son shoots, I would sure look into a fixed stock if I were mainly shooting long range targets. They just feel more stout to me.