AR Sponsor
MRP Badness, chapter 3 (Page 145 of 146)
Joined:
Mar 2022
Posts:
16
EE: 100% (17)
WA, USA
|
Originally Posted By kc3: If I am changing muzzle device, I'd want to hold the part it's attached to, not another separate, screwed-on part. They're both right-hand threads, so the same torque used to loosen the MD is also working on loosening the barrel extension. Pull the 2 bolts on the MRP upper, remove the barrel and put it in a vice. I always thought this was one of the main benefits of the MRP system. Thanks for the explanation. My issue started before I even took my MD off. Out of the box my reaction rod didnt fit. I had to take the barrel off to get the A2 off and that took very little force. I didnt use my reaction rod for disassembly or install. So I dont feel like I caused this issue. I have under 100rds through my barrel and there are sharp burs that have formed on the teeths of my barrel extension from contact with my bcg. I noticed this after a range trip while doing a whip down. I noticed that my cotton swaps were catching on the edges of the teeths of the extension. I smoothed them out with a diamond rod but Im thinking will this cause issues further down the road? |
|
Originally Posted By 2apatriot: I think its more, its just two bolts and you can pull the whole barrel. The reaction rod should definitely fit then, but a barrel vise block would be better. It's not just two bolts. If you've got a ton of Mlok accessories on the gun, you have to remove all of those to pull the barrel. This obviously doesn't apply to the Quad rails. There's no reason why a reaction rod can't or shouldn't be used in an MRP upper. LMT customer service is pure trash. The holier than thou attitude is irritating. I like their products but I have to twist my arm to get myself to buy anything from them these days after the way i've been treated. |
Mike_Golf says: "You're not an ethical hunter and likely an asshole to boot."
|
Originally Posted By Ninjassassin: Thanks for the explanation. My issue started before I even took my MD off. Out of the box my reaction rod didnt fit. I had to take the barrel off to get the A2 off and that took very little force. I didnt use my reaction rod for disassembly or install. So I dont feel like I caused this issue. I have under 100rds through my barrel and there are sharp burs that have formed on the teeths of my barrel extension from contact with my bcg. I noticed this after a range trip while doing a whip down. I noticed that my cotton swaps were catching on the edges of the teeths of the extension. I smoothed them out with a diamond rod but Im thinking will this cause issues further down the road? Gotcha. Obviously it appears you have an issue with your barrel. Hope you get it worked out. I agree that LMT's CS is spotty at best. |
|
After wanting an MRP since I cancelled my order for one in 2008 and went with a DD instead, I have a Specwar upper and 16" barrel on the way. Upon randomly searching and seeing Rooftop defense had a deal for MRPs with lightly used 16" barrels for a song, I couldn't pass it up. This leaves me with a conundrum where I would like some input, I want a 12.5" barrel, and I will run this gun suppressed 100% of the time with a non flow through, 30 cal can. I've seen a lot of reports of "combat gassing" even after cutting. My current upper is a carbine length 12.5" with a superlative arms gas block that is very soft shooting, reliable, and not terribly gassy. Do I: 1. Have D Wilson (his shop is less than 20 minutes from me) cut the LMT 16" barrel, and see what happens? I could follow this up by playing with buffers and springs, or getting the BRT gas tube. 2. Add the adjustable gas block install to my D Wilson order and use a Superlative with the LMT barrel. 3. Skip this altogether, get the 12.5" barrel of my choice, get the MRP barrel extension conversion, and be able to do anything else I need tuning-wise myself due to the standard parts? I would likely sell the 16" barrel (or keep and get a 13" MRP Upper down the road....) Option 1 would likely be the least expensive, and I could get it cut, shoot, assess, and add the BRT tube or change to a heavier buffer if needed. That is the way I'm leaning. |
|
Originally Posted By TexAg10: After wanting an MRP since I cancelled my order for one in 2008 and went with a DD instead, I have a Specwar upper and 16" barrel on the way. Upon randomly searching and seeing Rooftop defense had a deal for MRPs with lightly used 16" barrels for a song, I couldn't pass it up. This leaves me with a conundrum where I would like some input, I want a 12.5" barrel, and I will run this gun suppressed 100% of the time with a non flow through, 30 cal can. I've seen a lot of reports of "combat gassing" even after cutting. My current upper is a carbine length 12.5" with a superlative arms gas block that is very soft shooting, reliable, and not terribly gassy. Do I: 1. Have D Wilson (his shop is less than 20 minutes from me) cut the LMT 16" barrel, and see what happens? I could follow this up by playing with buffers and springs, or getting the BRT gas tube. 2. Add the adjustable gas block install to my D Wilson order and use a Superlative with the LMT barrel. 3. Skip this altogether, get the 12.5" barrel of my choice, get the MRP barrel extension conversion, and be able to do anything else I need tuning-wise myself due to the standard parts? I would likely sell the 16" barrel (or keep and get a 13" MRP Upper down the road....) Option 1 would likely be the least expensive, and I could get it cut, shoot, assess, and add the BRT tube or change to a heavier buffer if needed. That is the way I'm leaning. Option 1. Bring beers please 
|
Joined:
Dec 2024
Posts:
522
EE: 100% (3)
VA, USA
|
Originally Posted By TexAg10: After wanting an MRP since I cancelled my order for one in 2008 and went with a DD instead, I have a Specwar upper and 16" barrel on the way. Upon randomly searching and seeing Rooftop defense had a deal for MRPs with lightly used 16" barrels for a song, I couldn't pass it up. This leaves me with a conundrum where I would like some input, I want a 12.5" barrel, and I will run this gun suppressed 100% of the time with a non flow through, 30 cal can. I've seen a lot of reports of "combat gassing" even after cutting. My current upper is a carbine length 12.5" with a superlative arms gas block that is very soft shooting, reliable, and not terribly gassy. Do I: 1. Have D Wilson (his shop is less than 20 minutes from me) cut the LMT 16" barrel, and see what happens? I could follow this up by playing with buffers and springs, or getting the BRT gas tube. 2. Add the adjustable gas block install to my D Wilson order and use a Superlative with the LMT barrel. 3. Skip this altogether, get the 12.5" barrel of my choice, get the MRP barrel extension conversion, and be able to do anything else I need tuning-wise myself due to the standard parts? I would likely sell the 16" barrel (or keep and get a 13" MRP Upper down the road....) Option 1 would likely be the least expensive, and I could get it cut, shoot, assess, and add the BRT tube or change to a heavier buffer if needed. That is the way I'm leaning. Have Dave cut it back on order a BRT gas tube in the event that its a little gassy. I ran a sandman K on my factory specwar and it ran very nice. sold it as I prefered my 12 inch piston set up. |
|
That is a thing of Beauty indeed!  
|
Joined:
Mar 2022
Posts:
17
EE: 100% (17)
WA, USA
|
I now have a ghetto specwar. Should be way more capable than my previous....perfectly functioning....12.5" upper. Hopefully people on the internet will think it's cooler though!  Going to the range in a couple weeks for function testing and zero, might install the BRT gas tube depending on what I find out, then I'll put the light back on and it'll be my go to AR. |
|
I took yesterday off to finally get out and shoot the new Specwar and make sure everything was functioning with the BRT tube. It was about as good as I could ask, 4:00 ejection suppressed, still functions unsuppressed but will not lock back on the last round. No comments on gas to face as a righty with a 10-20mph wind at my back. Accuracy remains to be seen. I was shooting off a very small flat bag on a rifle case for front support and my hand on my bino harness for a rear support, saw a decent amount of vertical stringing. The barrel likes IMI 77gr, my 77gr handloads not so much. I was being lazy and using mixed brass, so I'll try with matched brass and try some 73gr ELDM as well. I wouldn't mind replacing the 1.93 mount with a 1.7 or even 1.54. Drops matched the previous upper (SOLGW 12.5" barrel, superlative gas block, Triarc handguard) out to 600. Did about 90 rounds of doubles at 35-45 yds, MAN it is hard not to visually track the NX8 dot up and to the right. 
|
|
Originally Posted By jtdam24: https://i.imgur.com/HlL7WlY.jpeg It begs the question. Which one do you like better? |
Donald Trump is President, January 20, 2025. America's path forward will be epic.
|
Gorgeous stick brother, hope you're doing well! |
Joined:
Jul 2022
Posts:
33
EE: 0% (0)
NC, USA
SpecWar work in progress. Waiting on my LMT eBCG to come back from HM Black Nitride coating at Rubber City Armory and my 12.5 mid Triarc Track 3.0 barrel with Riflespeed gas block to come back from d.wilson.  Total parts list will be: Lower - LMT MARS L, SBR - Geissele SSAE-X - Driven Arms Co SCG grip - Magpul CTR - FCD Trigger Pins - FCD 50° q lever Safety - FCD Take Down Pins - FCD End Plate - FCD A5 Castle Nut - FCD A5 Buffer Tube - FCD Buffer Retainer - FCD Mag Catch & Release - FCD Bolt Release for LMT - BCM Mk.2 Buffer, T1 - Geissele Super 42 Rifle Spring Upper - LMT SpecWar Upper Receiver - LMT Enhanced Carrier HM Nitride Coated by RCA - LMT Enhanced Bolt - Lantac Domed Cam Pin - FCD Low Drag FA - Geissele NSN Airborne Charging Handle - FCD Port Door Cover - Triarc Track 3.0 12.5" Midlength Barrel - Riflespeed RS7524 Gasblock - Aparition Instruments Nano - B&T Print XH SC, CAT 1x16 LH Munkworks Recessed 1x16 LH - Railscales XOS-H, XOS-W Rail Covers - Railscales Karve-P - Modlite PLHV2 Head, Arisaka Scout Body, Surefure DS00 Tailcap, Unity Axon Switch, FCD Cable Management Mlok Panels, Arisaka Inline Scout Mount - Scalarworks BUIS - Reptilia AUS 1.70" - Vortex Razor Gen 3 1-10 |
|
Originally Posted By ObiWanKannoli: SpecWar work in progress. Waiting on my LMT eBCG to come back from HM Black Nitride coating at Rubber City Armory and my 12.5 mid Triarc Track 3.0 barrel with Riflespeed gas block to come back from d.wilson. https://i.postimg.cc/brmzMPNT/20250818-164528-2.jpg https://i.postimg.cc/tC1QyWry/20250804-153825.jpg Total parts list will be: Lower - LMT MARS L, SBR - Geissele SSAE-X - Driven Arms Co SCG grip - Magpul CTR - FCD Trigger Pins - FCD 50° q lever Safety - FCD Take Down Pins - FCD End Plate - FCD A5 Castle Nut - FCD A5 Buffer Tube - FCD Buffer Retainer - FCD Mag Catch & Release - FCD Bolt Release for LMT - BCM Mk.2 Buffer, T1 - Geissele Super 42 Rifle Spring Upper - LMT SpecWar Upper Receiver - LMT Enhanced Carrier HM Nitride Coated by RCA - LMT Enhanced Bolt - Lantac Domed Cam Pin - FCD Low Drag FA - Geissele NSN Airborne Charging Handle - FCD Port Door Cover - Triarc Track 3.0 12.5" Midlength Barrel - Riflespeed RS7524 Gasblock - Aparition Instruments Nano - B&T Print XH SC, CAT 1x16 LH Munkworks Recessed 1x16 LH - Railscales XOS-H, XOS-W Rail Covers - Railscales Karve-P - Modlite PLHV2 Head, Arisaka Scout Body, Surefure DS00 Tailcap, Unity Axon Switch, FCD Cable Management Mlok Panels, Arisaka Inline Scout Mount - Scalarworks BUIS - Reptilia AUS 1.70" - Vortex Razor Gen 3 1-10 This is awesome. I have a 2.0 barrel in one of my LMTs. Didn’t know they had a 3.0 version. Super nice Hodge barrel in this one 
|
Joined:
Jul 2022
Posts:
38
EE: 0% (0)
NC, USA
|
CONGRATULATIONS to LMT for Winning the MRGG-A Contract! LMT Wins the MRGG-A Contract 
|
|
Originally Posted By TexAg10: After wanting an MRP since I cancelled my order for one in 2008 and went with a DD instead, I have a Specwar upper and 16" barrel on the way. Upon randomly searching and seeing Rooftop defense had a deal for MRPs with lightly used 16" barrels for a song, I couldn't pass it up. This leaves me with a conundrum where I would like some input, I want a 12.5" barrel, and I will run this gun suppressed 100% of the time with a non flow through, 30 cal can. I've seen a lot of reports of "combat gassing" even after cutting. My current upper is a carbine length 12.5" with a superlative arms gas block that is very soft shooting, reliable, and not terribly gassy. Do I: 1. Have D Wilson (his shop is less than 20 minutes from me) cut the LMT 16" barrel, and see what happens? I could follow this up by playing with buffers and springs, or getting the BRT gas tube. 2. Add the adjustable gas block install to my D Wilson order and use a Superlative with the LMT barrel. 3. Skip this altogether, get the 12.5" barrel of my choice, get the MRP barrel extension conversion, and be able to do anything else I need tuning-wise myself due to the standard parts? I would likely sell the 16" barrel (or keep and get a 13" MRP Upper down the road....) Option 1 would likely be the least expensive, and I could get it cut, shoot, assess, and add the BRT tube or change to a heavier buffer if needed. That is the way I'm leaning. I did number 1 also after getting a Rooftop Defense deal. I have a Sprinco Green, A5H2 buffer, and a Griffin Recce5k on mine. It is 100% suppressed and using the LMT gas tube. It is one of the softer shooting guns I have. I also swapped in a Bootleg adjustable BCG and also tried the new Griffin Enhanced BCG. The only comparison I did with them was shoot some rounds, swap in the other and shoot some rounds. No chrono, etc because I didn't care that much. The only difference I noticed was the sound. It was still a soft shooter. I left the Griffin BCG in because it was the one I swapped in last and I saw no need to go back to the Bootleg out of pure laziness. Not related but something else I wanted to pass along in case anyone comes across the same issues. I have an MWS (7.62x51) 13.5" SBR 100% suppressed with a direct thread Omega 300. Way overgassed with the Omega and most of the time wouldn't fire more than one round, maybe two before a malfunction due to bolt speed. I read on another site where Uncle Moak said since the LMT gas tubes are straight, to remove it, spin it 180* and drill a new gas hole. I did just that and I believe I used a .040 drill bit because it was the smallest I had and was just going to go up incrementally until it ran well. Well, a 100% suppressed 13.5" MWS runs just fine with a .040 gas hole with an Omega 300. It is also a soft shooter. I am also using a Heavy Buffers XH buffer and spring combo. I tried different buffers/springs before drilling with no positive effect. It is a single shot without the suppressor and I haven't tested it in cold weather although I don't see ambient temps affecting it. If the .040 becomes an issue while suppressed, I'll go up another drill bit size. Thanks for the tip because I was about to buy a BRT tube for the MWS. |
|
So good it’s timeless |
|
Originally Posted By 135Patriots: https://www.ar15.com/media/mediaFiles/487230/IMG_4379_jpeg-3644773.JPG Niiiice! |
|
Originally Posted By emtothedee: https://i.vgy.me/uBmkob.jpg Sick! |
|
Originally Posted By jtdam24: Although the all black Specwar is also baller https://i.imgur.com/H0aSUx1.jpeg Oh damn I didn’t know you had a spec war, especially in all black 🥷 |
|
Originally Posted By RichieRich562: Has anyone done a quadwar with a 13.9 barrel? Been thinking hard on doing this but can’t find any pics or info Any thoughts on this setup? I found a rifle length MRP with a 13.9" barrel and it looks epic. But nothing for a quadwar setup. |
Be killing sin or sin will be killing you. -John Owen
|
Originally Posted By RichieRich562: Has anyone done a quadwar with a 13.9 barrel? Been thinking hard on doing this but can’t find any pics or info Any thoughts on this setup? Literally take my rifle posted above/below and imagine the rail chopped down to 11.5 (from 13.25). That’s a 13” chopped bbl on mine so OAL would be exactly what you’re looking for. Attached File |
|
Originally Posted By 135Patriots: Literally take my rifle posted above/below and imagine the rail chopped down to 11.5 (from 13.25). That’s a 13” chopped bbl on mine so OAL would be exactly what you’re looking for. https://www.ar15.com/media/mediaFiles/487230/IMG_4526_jpeg-3665256.JPG Originally Posted By 135Patriots: Originally Posted By RichieRich562: Has anyone done a quadwar with a 13.9 barrel? Been thinking hard on doing this but can’t find any pics or info Any thoughts on this setup? Literally take my rifle posted above/below and imagine the rail chopped down to 11.5 (from 13.25). That’s a 13” chopped bbl on mine so OAL would be exactly what you’re looking for. https://www.ar15.com/media/mediaFiles/487230/IMG_4526_jpeg-3665256.JPG Really like how this one is set up. |
Be killing sin or sin will be killing you. -John Owen
MRP Badness, chapter 3 (Page 145 of 146)
AR Sponsor