AR-10 vs LR-308 (What's The Difference?)

Armalite's new AR10 rifle is the type "A" it is very similar to the SR25 in that it will take Magpul P-Mag's or SR25 magazines. The original AR-10B or Type "B" rifle will use the M-14 waffle magazines.
I purchased a new Armalite type "A" (AR10TAC18) back in 2015 and it is extremely accurate as well as reliable with most 308 and 7.62 NATO ammo. The rifle is a bit on the heavy side weighing a little over 9.5 lbs. without a scope and empty magazine. My example came with Armalites SPR HB match barrel and if you do your part it will shoot MOA with match ammo like Federals 168gr. gold medal match.

With PSA putting out their .308 ar for sub-1k, their pattern may become ubiquitous enough to become the standard.

"MOTHER FUCKER COCK ASS BIATCH!!" – What someone says when they are building a DPMS 80% and find out that the gaps and tolerances are a grab bag of fun! I am still trying to build a DPMS with FA (Low Profile) after 3 months! I will save you time people! Buy a 80% SR25 version that allows for the Pmags. I believe the fitment for the SR25 version will allow you to find an upper that has a WORKING FA.

SR has the stoner platform. I have the SR25

Diamondback is AR 10 cut A pattern for the most part, not DPMS, with the exception of barrel nut from what I've seen, I know mine isn't DPMS cut anyways.

KNOW WHAT YOU HAVE BEFORE YOU BUY ANYTHING DONT BE A DUMMY

ghost? bogyman ggn?

I prefer the LR-RIFLE for Deer hunting.

Bear Creek arsenal so that you can get an AR-10 and 300 win mag not the 300wsm how.

Diamondback uses the armalite style lower. I found out the hard way.

KAC kept the slanted edge on the sr25…..

Three of us bought ar10s from armalite decades ago. We all sent them back
at least once. I still have my armalite scope base. That rifle sucked.

I would like to see you guys give away more guns to people at my address

The SR-25 pattern is Armalite pattern.

ES designed the SR 25 also

Umm… The AR10 was adopted for limited use.

That was very informative specially about DPMS Gen 1 and Gen 2. Sir You put the both generations side by side showed that the Gen2 lower is shorter than Gen 1. Could you please give the measurements of both so I can figure out what generation rifle I have.

Normally they say the top of the charging handle will determine high or low but I measured it between 1/8 and 3/16. This makes it me hard to find a compatible handguard and barrel replacement.

Please advise

Nice to know YT voluntarily unsubscribed me from this channel.

Great video!

Good show. Just picked up a Stag AR10 stripped lower.

"here is a comparison of the receivers that i will completely block with my hands so you can't see the differences I just described"

Matt seems cool

I have a very odd LR308 DPMS lower, I'm not sure how to pick my upper, can I send you a photo, the back of my receiver has no curve at all, it goes fully flat, I've never seen one like this.

So what standard is the PA10 upper best compatible with? They claim its only best with its lowers, but I’ve heard hints in the community that it actually does fit and work in some standards fine.

sr-25 are ar10 pattern not dpms pattern…..

I am looking into building a 308 but I have no clue on what is out there. Still trying to do the research and stuff before I ever think of buying parts… I was leaning more on the LR 308 instead of the AR-10 but IDK!!! Thanks for the info…

I have owned an ArmaLite AR-10 Carbine for 8 years and want to buy a more accurate barrel for it. The online outlets I have contacted tell me they do not have a replacement barrel that will fit. However, your video says they are interchangeable. Can you help me?

Perfect timing. I just ordered an Aero DPMS stripped lower to build my first AR style rifle in big boy caliber. Or should I say I'm building a LR308 in 6.5cm…

How about a new 3 gun build series (lowest price, out of the box, and high end) making AR 10s/M5s

Bring Alec back!

When you pulled out your phone, I actually thought your were pulling out a sidearm to put the offending rifle out of your misery!

I believe the barrel extension on the dpms is different than the AR10

When I got my first AR15, I had it built by a custom builder shop with parts I mostly chose. It turned out awesome, but the builder did a few things I would've done differently as I learned more about guns.

I built my own AR10 about 7 years later, based on an Aero Precision M5E1 "Builder Set" in a limited edition burnt bronze Cerakote. That rifle is AWESOME, but it was a real headache choosing parts and navigating the AR10 discrepancies that you mention. In the end, 10/10 would recommend a home build AR, but for 308/large frame ARs, I recommend buying your receivers from the same manufacturer. Truly, I recommend buying the receivers and handguard, and specifically I highly recommend Aero Precision as a manufacturer. I went with a mix of other manufacturers for the barrel, stock, grip, trigger, BCG, charging handle, etc. But I used a matched receiver and handguard set from Aero, as well as their enhanced lower parts kit and couldn't be happier.

Built an Aero M5 Enhanced and I love it. With the 15-in enhanced Gen 2 handguard, bipod, 4-18 Vortex scope, and my Rugged Radiant 30 cal suppressor, that thing looks sexy as hell lol. Good job!

Great information!!!!!

where does the savage 308AR fit in? is it like the rem offering?

This visual article didn't cover half of the incompatibility issues, even within the sr/lr line up. Small pin, large pin, proprietary pins and barrel nuts. 3 different ways manufacturers have adopted the 308 to a more 223 size, rail height and bcg changes due to these large rifles beating the snot out of themselves, primarily due to extreme overgassing, requiring fine tuning of a custom heavy buffer and/or gas block/piston.
Don't get me wrong, after extensive test and tune, I love mine. But I will never buy one again. Lack of standardization tells me to get/build the best one you can afford and make it work.
FYI: Rifle piston, heavy carbine buffer system cause it does not need to be longer especially with plates, and 13.5 pounds. Be prepared.

Inherited a AR-10 B with a carrying handle upper. Pain in the ass finding magazines and aftermarket accessories.

I’m very certain that Kac sr25 pattern is the same as armalite. Dpms has a round profile.

Fantastically helpful video. Not to slow, not too fast, and very authoritative. Now I get it. Well done!

WOW WOW WOW…. Thank you so very much for this video. I was just thinking about building an AR-10 and now I know it's not going to be as easy as my AR-15 was.

Where is clint??

Very good video buddy. Thumbs up ~John

Some close ups of the differences and take a second to show them would be helpful. He covered the differences but covered it rather quickly

A great video mate i wish i still had my 1975 issue AR10 with top carry handle as the one on the wall behind you
I would love to win the reaper but im in Australia
We cant have automatics

I’m about 1/3 into this video and why do you think the DPMS LR308 is a AR15? It’s not an ar15. You can’t get a 308 cartridge or magazine in an AR15. AR15 bcg won’t fit the LR308. I know the things I’m saying are 100% contrary to your “vast expertise” but that’s how wrong you are. Yes the AR10 was the first rifle of the design submitted and was denied acceptance into US armaments, but that’s all, that there’s no 1 standard for an AR pattern 308 rifle. Fun fact per DPMS service any standard AR15 trigger will work

DO NOT BUY ANYTHING FROM THIS COMPANY. THEY'LL SEND YOU THE WRONG ITEMS THAT ARE BLEMISHED AND SCREW YOU ON GETTING WHAT YOU ORDERED.

This one here a hit