1 Monocot and dicot are short for monocotyledon and dicotyledon. 2  Mono-means one, and monocots have one cotyledon. 3  Di-means two, and dicots have two cotyledons. monocot plant has one cotyledon (scutellum) in its embryo whereas a dicot plant has two cotyledones. 2. A moncot pl â¦ ant has generally isobilateral leaf with parallel venation whereas a diicot plant has dorsiventral leaf with reticulate venation. 3.
The AR-15 was developed as a lighter, 5.56 mm version of the AR-10. The AR in all ArmaLite pattern firearms simply stands for ArmaLite, and can be found on most of the company's firearms: AR-5, a .22 caliber rifle; the AR-7, another .22 caliber; the AR-17 shotgun; the AR-10 rifle; and the AR-24 pistol.
I have an AR-15 lower that is registered as a pistol. I want to put a 16 inch barrel on it and put a retractable stock on it.I have been searching the net and all I can find is info on how to change an AR-15 lower from a rifle to a pistol.f you have a complete AR pistol (upper with a short barrel on it) then you should either convert it into an SBR (NFA paperwork + $200 one time tax stamp) or GET RID of that short barreled upper!