MONOLITHIC UPPER

[Belmont31R]

Most guys I know with MRPs, myself included, do not swap out barrels AT the range. I only swap a barrel when I want to go from a CQB config to an SPR, or from one FH/muzzle device to another. In other words, most guys do not hot swap barrels like you would a SAW or other machinegun, you swap only if you want to switch to hunting prarie dogs from running a carbine course. In your scenario, having multiple uppers does make more sense. Not to mention that the torque wrench for swapping barrels ways as much as a whole BCG, not something I would ever hump around in the field--Barrel swapping is best done back at "base" with the MRP IMHO.

Thats all I was getting at.


I plan on getting the SS barrel for the MWS but that would only be something Id swap out between range trips, and I wouldnt swap the barrels right after firing. I wouldn't even be able to hold onto it without getting burned.


Hell I've gotten burned from brass bouncing off something, and hitting my arm let alone holding onto the barrel to change it out.


All I do with my guns at the range is lean them up against the next bench over (almost always enough benches to go around where people can spread out), on the ground, a table, whatever. I don't swap uppers, either. Everything is on its own lower.


I should also add, that if all you're doing is switching barrels between range trips then when you do go to the range you either have more than one upper/gun or just shoot the one gun. So while it may be a cost savings to have multiple setups with one chassis it doesn't get around the fact you still only have one gun at the range or buy more than one upper/rifle to begin with. When I go shooting I like to shoot more than one setup.

[variablebinary]

How do you switch out a barrel without burning yourself if you just shot 100+ rounds out of it? Do you also wait for it to cool down first?

I've swapped several barrels at the range with my XCR, but not with LMT. The most lethal part is the gas block, but the barrel game off easy with a Nomex glove and I didn't get roasted in the process

Though, this was not the norm. Typically how the gun leaves the house is how it stays at the range. This frequent swapping was the result of my needing to put a couple of hundred rounds through experimental barrels I had designed.

The norm is prepping the gun for the type of shooting I am planning on, and establishing a config I want before leaving, not while the shooting is in session.

[mark5pt56]

Bottom line is the end user has to decide on what they want out of his/her kit. Do they want multiple AR platforms to fit different roles? This could include different lowers as well or just one to fill all possibles. With the MRP platform, there's currently how many barrels that you can use to tailor it to your "mission"
The same as any other quick change system, the change would take place before you "go out" Being on a normal range trip, can you take spare barrel, wrench, etc and do a change there? Of course you can. I would hold that it depends on you the user as how you want that to occur, change a barrel or have another upper.

In regards to the upper, I would look at all variables involved. Various optics, ancilliary equipment such as lights, lasers, grips, rail covers slings, mounts(not needed with the built in QD on the MRP) etc. This all adds up for one. Yes, you do need to check zero when changing a barrel, not a big deal.
Most people probably couldn't even tell the difference with how they shoot(skill, type and distance)

I did alot of homework when choosing the MRP system, I like the modularity, quality and utility that I get from the system. I feel it's more of a "complete system" if you require the use of different barrels and calibers. Is it for you if you only want one barrel, maybe not. Obviously, I felt it was the best option out there over the competition.

I can't answer for Trident in regards to "going to the range and changing barrel/calibers at whim" I seriously doubt he's doing that and firmly believe he fully understands that's not the intent of the system anyhow. But if I have one AR and want to go hunting, no worries, couple minutes with a barrel change, check zero and I'm good for the season, in for a Pdog hunt, same same, Vickers class coming up, you get it---

Again, it serves no point to argue your desire on what system you like to run, speak of the merits on each system keeping in mind the Op questions without beating on someone else for what they like.

Mark

[Belmont31R]

Thats one of the reasons I got the MWS....I can "abuse" the 16" CL barrel one range trip engaging gongs quickly from 100-500 yards, and hit the 500 yard plus stuff with the 5R SS barrel another time. Just switch optics at home, and off I go. Work more on long range accuracy one time and faster close in work another.


However its not a "replacement" for having two guns vs. one at the same time. I would actually prefer a 2nd MWS just because I don't like the same type of trigger for precision work vs. faster shooting but I don't want to pay for a complete 2nd setup in 308. If was going to do that Id get a semi custom bolt gun in 300WM or something similar.

[HETZ1313]

Trident what bag for your kit are you using?

[Cincinnatus]

What do the HG lengths of the MRPs equate to?
To my Mk1Mod0 eyeball it looks like the "Rifle" version would have the same length as a normal receiver with an 11 or 12 inch HG, and the CQB looks like a 7" or 8".
Anybody able to make the comparison?

Here's some pics. These won't give Stickman any competition, but they give you an idea of comparison and actual length, etc. Hope this helps.

[ALCOAR]

Trident what bag for your kit are you using?

Hehe....the one Mark is gonna invent for us.....I shared my thoughts on what I would like to see in one earlier through this sketch...what do you think? For the record its Marks great idea to even try and see about a specific case to enhance the MRP and its diff. options....I do in fact think that if done right, it would make a fantastic addition for MRPs.



Winfield....WE NEED TO HANG OUT Those are pure perfection and straight awesome specimens...I also think that is the way to run MRPs as in Rifle length's for non nfa, and cqb's for nfa applications....however I never met a non nfa length cqb that I did not want to take home. I am gonna explode if I see too more 10.5" d.i.'s before I get the stamp here in hopefully sooner than later. I like how they both almost match in respect to the amt. of barrel exposed from the rail on both models.

[ALCOAR]

WTF are you talking about?


Your post has nothing to do with what I posted.


Again....I fail to see how taking 3 complete seperate guns to the range is HARDER than different barrels, optics, a TQ wrench, BCG's, and then swapping between them every time you want to shoot a different setup. Why don't you explain how that makes any sense. You're the only person Ive ever heard say something along those lines. So why don't you explain it instead of some barely coherent response that has nothing to do with what I posted? Im asking YOU to explain this to me since "I fail to see how" was my original statement. I know how the MRP works, and you've done a great job of explaining it numerous times. With that in mind Id like to know how what you described is easier than taking a few complete individual guns, and swapping between those.


I never said anything about POI shift or the "proprietary touches"....

I apologize as all your MRP comments kinda blur together from one of these threads to the next and all of them are you analyzing a system that you zero time on yet you continuing to blast off with your uneducated opinion on them so do not let me stop you from from continuing to just not get it and you prob. missed the boat many moons ago anyway

[Byron]

...analyzing a system that you zero time on yet you continuing to blast off with your uneducated opinion...

OK - I own two MRPs (and have had them each a few years). Hopefully that gives me enough credibility that you'll read my post.

Looking back, this whole thing started after your hyperbolic pitch for MRPs...

[The MRP] is simply unmatched and prob. will never be matched....feat of absolute perfection in terms of engineering as well.

That's really coming on strong, but it shouldn't surprise people given your current sig-line:
"If its not mono-railed, and it ain't built by a guy name Karl.....I don't want it"

After all, if you feel the need to proclaim your allegiance to the MRP in literally every post you make on M4C, it shouldn't surprise people when you bring on heavy praise in a thread about monolithic uppers.

Still, to say that any modern firearm is "perfection" that "prob will never be matched" is hubris, plain and simple.

...bottom line is folks by in large have no real depth or understanding on the MRP system...

This is where things start to slide further past any logical point. You are going down the road that anyone who disagrees with your assertions simply doesn't have "depth or understanding."

even though they "in theory" speak on things like Id rather have a bunch of heavy fully outfitted uppers instead of a mrp system since humping a bunch of awkward heavy uppers is better than just a barrel or two and perhaps a bcg.

And this is where Belmont challenged you.

As an MRP owner, I actually think his point is fair. He didn't argue about engineering, or perfection, or the inability of any manufacturer to ever put out a better product between now and the end of time. He simply challenged the idea that carrying around a bunch of barrels, a torque wrench, optics, bcgs, etc... is somehow clearly preferable to carrying complete uppers.

People have come back on the cost issue, which is quite fair. To say that carrying all of those parts and having to disassemble/reassemble is any less "awkward" than carrying uppers that require the push of two pins with your fingers... well that's where even as an MRP owner I simply cannot agree.

[mark5pt56]

Ok, we've degraded to a point of arguing and it's going nowhere now.

All posters have different opinions and idea's on how they want their kit, all have merit.

OP, if you need any questions answered, feel free to PM me or whoever else you want to ask.

Thanks!

Mark