ar15 idea

I dont have an ar, and i have never shot an ar. I was thinking though since you can swap multiple uppers on a single lower reciever, why dont you buy about 4 uppers and 1 lower. You could carry the uppers in a specialized pack, and then switch them as the scenario changed. You could carry around a 16in. carbine length 6.8 spc, and throw on a 24in. 223 upper for long range precision. Then you could switch over to a 50 beowulf or .458 SOCOM for smashing vehicles. Then you could throw on a .300blk for quiet stopping power. This just seems like it would be a common thing, but I can't find evidence of anyone doing it. I mean really, you could handle anything you came across. You wouldnt have to compromise on caliber and lose any ability. Anything you came across you would have the perfect round for. Seems like a great idea. I know you cant change out the uppers in just a couple of seconds, but how long would it take? Even if it would take a minute, having 3-4 uppers in a special compartment in your pack would seem to make sense in WROL or zombie outbreak.
(jk)

Well if we say each upper averages about 8lbs. with scope (very very generous average, most would be lighter though. Some wouldnt need scopes, they would use eotechs or aimpoints. Weight would also be saved by using short, 16 or 18in. barrels.) and your complete lower is 3.5lbs, you are carrying 35.5lbs of gun. Out of that, 11.5lbs is in your hand already. That means 24lbs in your pack. Now then, ammo. You wouldnt need but 1 or 2 mags for the Beowulf or the SOCOM, and that mag/mags could be a low cap mag. So lets say you carry 3 mags for the 6.8, a couple of 20 rounders for the long range 223, and 3 mags for the blackout. Thats about 8 lbs. of ammo. You would be carrying about 230 rounds of ammo. In most scenarios, you will be able to return to a camp or base and refill your ammo supply. The cost of the system would also be only about $4300 for 4 uppers, a lower, optics for them all, a handguard, and one VG.

So we could carry a different upper than the 300blk. I would personally choose a 24" cmmg .204 for hunting varmints or for precision shots. I would then go from the long 223 barrel to an 18in. 223 barrel for ammo availability.

Well if you needed a system capable of everything, and you only had 4 grand. This could be a great system. Also, here is an example list of possibilities for it.


$365 Spikes Tactical spider lower, standard kit; CTR stock & MOE grip (Spikestactical.com)
$925 Rock River Arms .458 SOCOM CAR A4 complete upper half(rockriverarms.com) Upgrade parts to Smith AWB brake, large Gas Buster latch, Hogue hand guard, and low-profile varmint gas block.
$750 CMMG .204 ruger 24” upper (Brownells.com)
$525 STAG Arms 6.8 spc carbine complete upper 16” (dsgsarms.com)
$90 UTG PRO Leapers carbine length quad rail handguard (cheaperthandirt.com) for the 6.8
$620 Rock River Arms 18” Varmint Upper with A4 flat top (impactguns.com)
$20 Magpul MOE RVG grip (cheaperthandirt.com) for the 6.8
$260 Osprey Red Dot Sights HGPROD (opticsplanet.com) for the 6.8
$400 Nikon M223 2-8x32 BDC reticle with Nikon M223 rings (opticsplanet.com) for the .223
$255 Millet DMR 1-4x24 red dot riflescope (opticsplanet.com) for the SOCOM
$370 Sightron SII 4-16x42 (opticsplanet.com) for the .204
TOTAL: $4,580
The 6.8spc would be the primary upper because of it’s extra stopping power over the 223. The .204 is for long range precision, and the ammo is lighter than 223 or 6.8. The .223 is used because of its ammo availability. This would become the primary system if the terrain opened up and allowed longer shots. The Beowulf would be used for smashing vehicles or light structures.
(This system could also be used on western hunts. The 6.8 is for use on medium sized game at close-medium range. The 223 would be small-medium sized game at slightly farther ranges. The 204 would be used on coyotes or prairie dogs at medium to long range, and the .458 SOCOM is for large game like moose or elk)

Ok, lets ignore the weight for a minute. Just how long/hard would it be to switch uppers in the field???

I'll clarify, this would be a tactical setup capable of everything from long-range precision fire to room clearing to hunting moose to stopping vehicles. Carrying it I'm not worried about, as I said earlier a specialized case with individual compartments for the uppers would make carry a breeze. The part I was wondering though, is how hard it would be to switch uppers. Now that I know it would be simple, I see this as an extremely viable option for use. As for buying a .308 and being done. Can a .308 punch through an engine block? Maybe. Can it be used in room clearing? If you have a short barrel and holographic/ red dot sight. Can you hunt large game with it? Not all big game. Can you go long range? With a longer barrel and higher magnification range scope. Can I hunt praire dogs or coyotes with a 308? There wont be anything left.
Instead of sacrificing long range precision for room clearing ability, small game hunting for stopping power, and vehicle stopping for ammo capacity. You can have the perfect rifle for everything you do or anything you could ever come across. Adding a suppresor to the .458 SOCOM would officially round out the package into a true tactical monster.
Also, if I were to go through and get this system, would anyone be willing to modify a backpack to hold the uppers in special compartments?? (There is an extremely small chance of that happening, but I am considering it.)