6.5 Grendel and 6.8 SPC really just need a barrel, bolt and magazine change. I'm not sure on 9mm.

i dont want to be shot be any of them

LOL, I agree. <img src="/ubbthreads/images/graemlins/smile.gif" alt="" />

Sorry if I went off on a rant. I'm just very into this stuff.

there is a 9mm hammer & diffrent buffer/spring

I guess I have heard of the 9mm buffer but I didn't know there was a diffrent spring and hammer. Thanks.

if you look on this page you can tell a diffrence between the 9mm & 223 hammer
http://www.rockriverarms.com/item-detail...FTOKEN=97857747

There are several times I recall the ineffectiveness of .223 at MANY ranges, but the one that stands out is when a "person of interest" was struck in the upper left quarter of his head and lived for 6 and half hours. He was hit at about 35-45 yards....hard to judge while running. And just countless times folks were hit and continued to fight, one fellow was shot through his back in his mid-upper left chest region. He lived just fine. Teeny tiny little hole and a blood gathering under the surface is all. No vitals were hit....lung heart arteries nothing seriously damaged.

Yes, you can carry more ammo...but who really needs to in the "civilian" world? as for home defense.....12 gauge or pistol. I don't really think a .223 would make much sense. I wouldn't recommend ANY rifle for home defense.

As far as accuracy, I think is on the person and quality of the firearm. Most Snipers LE or Military are .308s.

The m240 was my second best friend next to the M2(that's a whole nether story) But I would gladly carry the extra weight for the man stopper power provided by the .308.

If you have one because you like to go sport shoot and like a HUGE assortment of gadgets and gizmos to add to it and want to be able to land a [censored] Jumbo Jet with it go ahead...It is just not my bag....

ma duece up in here

I used to be up on this stuff, but that was 25 years ago. All I know for sure is the 5.56 mm is probably not the best long range military rifle. But around here, 100 yds is a long shot because of the heavy cover. The 5.56 mm seems to work well for police in urban situations as well. If you find an expanding round that is reasonaby accurate in your weapon at 200 meters, that should be good enough for any civilian defense situation I can imagine. If you get a head shot, it really won't matter what kind of bullet you use, your attacker/enemy will be shut off and DRT. I am loaded with 64 gr Win Ranger Power-Point Law Enforcement ammo. That should do the job in any of my .223s. For home defense, I use a 20 ga Mossberg loaded with #1 Buck shot.

In complete agreement!!! <img src="/ubbthreads/images/graemlins/laugh.gif" alt="" />

the guy i work with has a barret 82a1....complete badass