I purchased a used Magpul CTR stock with LaRue RISR and POD installed. It was interesting to try out the LaRue Reciprocating Inline Stock Riser (RISR) on an AR15. The RISR is made to give a higher cheekweld on rifles like the LaRue .308 OBR and accommodate the charging handle on the AR series of rifles.
I tried the RISR on a Colt 6920 first. I found the RISR to be high enough that I could not use the standard iron sights on the 6920. When I tried another upper with a NightForce 2.5-10×24 in a LT135 high mount. Even with the scope mounted higher then normal, I found the taller checkweld that the RISR gave made looking through the scope awkward.
Using the RISR gave a little more resistance then charging a normal AR15. Having an extended charging handle lever would help when using the RISR.
The RISR may be an excellent choice for high mounted optics on the higher rail of a .308 AR. However for me, the RISR just gets in my way on AR15s. I have already removed the RISR from my rifle and will be sending it to Shawn so he can try it out.
Now that the magpul DVDs have been out for a while and it seems everyone has seen them, I have noticed a few common ideas about them people seem to have especially on internet forums. A lot of people I talk to about them seem to miss some of what I think is the real point and value of them. they obviously can not substitute for real hands on training, but they do have some real benefit despite what some say. Mainly I think the point lost on a lot of people is the video really help with weapons handling and manipulation. Even if you are a long time AR15 user, you can learn some pretty good stuff, even if you do not adopt their procedures it gets you thinking ( if you have enough brain) about cleaning up your own sloppy actions.
If you do choose to use their version of each operation its still some good stuff. Its in style now to rag on them and make all the useless and pointless tier 1 jokes in a worn out attempt to be sarcastic, but in doing so, some real chances to learn are lost. I for one have become a lot smoother with my weapons manipulations and have even modified some of what they teach to better fit me. You do not have to do it exactly their way but it is a great starting point for basic manipulations and smoothing your own self out.
Another thing people seem to get the wrong idea bout is speed, or how fast they can put 5-10-20 whatever rounds out. We have seen a lot of guys shooting at ranges who seem to think the point is to get the mag half empty in 3 seconds even if they hit the dirt 5 feet in front of them!! The videos do not demand 1 MOA groups on target, but a balance between speed and accuracy that is good but not slowfire at the NM good. But it seems that because it is so cool to see those two guys dumping rounds on target in seconds people just forget you also need to actually hit with those rounds. The more the offender seems to blaze away at a break neck speed, the worse they were at just plain marksmanship to start with. The idea being forget precise shooting I will just do a mag dump! Few seem to want to train smooth a slow so they never gain the speed that comes through the repeated movements done correctly.