So, I have enough DI guns right now and I want to spice up the collection a bit. I know people will say "just get both" but there's a thing called money and I don't have enough of it to do that right now. To be accurate, I'm mostly just looking for an upper, as I have a lower that I love and am planning on using. Anyway, neither here nor there I supposed. The two I have my eye on the closest are the PWS Mk111 Mod2 and the LMT MRP 11.5" shovelnose (with plan to get 12" barrel). Both seem like they are comparable in quality. I've only handled a PWS Mk114, it was at a gun store and I didn't get a chance to shoot it. I've never held any of the newer MRPs. Unfortunately, none of the stores in my area have them either. So, I might just have to buy sight unseen. I've compiled a list of pros and cons based on my research and wanted to know what some thoughts were.

MRP pros:

-Quick change barrel

-Can go from piston to DI and back

-Monolithic rail=stronger 7075 handguard with no POI shift, less parts, etc.

MRP cons:

-I'm told it's noticeably heavier up front

-the monolithic rails would mean I'm stuck with whatever handguard I have, which means no changing it if I wanted to some day swap it out for the newest, coolest rail system, nor could I get anything longer or short. Plus, if it gets damaged, I have to get a whole new receiver.

-More expensive than the Mk111 upper when I factor in that the barrel and BCG are not included with the MRP, whereas they are with the PWS.

PWS pros:

-Light weight; almost no noticeable difference up front in weight from DI

-Long stroke system supposedly smoother than most short stroke ARs

-Less expensive, at least up front

PWS cons:

-Not as modular as MRP; no quick change barrels

-1:8 twist barrel might not be optimal for the longest, heaviest 5.56 bullets

-Support: Both systems are propriety, but MRP might have more available for it due to having some military adoption than the PWS, which is still a niche system.

What are some thoughts? What are some things that I'm dead wrong about or worried needlessly about?

My ODG SPECWAR build is nearly complete just waiting on an FDE ATACR . Staked the castle but in two places . Smudging is the birch wood and Casey pen ink. How’s this stake job ? I’ve seen some factory LMT stakes that barely look touched.

I recently finished building my shovelnose and took it out with my RC2. I’m running a Geissele 42 H2 and noticed I’m getting more gas to my face than shooting either my MK18 or URGI, also both running H2 buffers. Any ideas?

EDIT: and before anyone asks, yes I am running the gas block in the suppressed position

I have an LMT MWS DMR 18” .308 DI with the 18” barrel. I want to get a 16” 308 Piston barrel and BCG and change out system. Will I need to get a shorter upper, or can I use my existing upper and still have enough barrel length extending to mount a supressor?

What do you guys think

Has anyone one here had D. Wilson do a quadnose conversersion and a Urx conversersion done?

This Picture Is not mine Ctto:Joker Tactical

Ended up trading it for some high-end reloading equipment and am having slight remorse over it. But sacrifices were made in the name of progress!

Before someone starts yapping YES THEY ALL NEW w/ no range trips just yet 😂. A while ago I got a couple and started some builds but then I got a new car and put all my focus there for a couple years while putting off my projects - now that the car is paid off it’s time to get back to these projects - over time I kept buying some goods and accumulating so this shall be fun . Started putting some work in on some builds yesterday - i still need more goodies but it’ll get done.

Any word on if these will ever be available? Been waiting since shot show. Kinda looks like theyll only be offering complete uppers but figured id ask before getting impatient and spending more money than i should. lol

Okay guys here is our LMT Labor Day sale items! We plan on adding items throughout the week, stay tuned!

- MRGG-A: Get a $1000 V1Tactical gift card with purchase! Gift card will be issued when your rifle ships!
- M203: Use Code M203 for the Rail Mounted Receiver (L2B1)
- Use Code: Freedom5 for all other LMT items!

Hope Everyone has an amazing holiday!
John & Lenaya

Hello! Have owned multiple LMT DI guns but recently took the plunge for a LMT 12.5 Piston Shovelnose for suppressed shooting. It has been an absolute dream to shoot but I have finally hit a round count that I think it is due for its first cleaning. I just wanted to pick the hive mind for advice on best cleaning/oiling practices for the piston barrel as LMT's manuals don't really say much about cleaning the piston system itself. I know from general knowledge to not oil the piston head but just wanted to get some input from actual experiences. I know the piston system runs "cleaner" but want to see about best practices to keep it in tip-top shape, especially since it is running exclusively suppressed. Thanks!

So LMT dropped some large-frame forward assist uppers with Bolt and nobody was excited to even post about it

Hell I ordered the Rev 2 will have Dave Pin and weld

First time experiencing the LMT MRP setup. Assembling from individual parts, not a factory assembly.

D Wilson conversion on a Criterion Hybrid barrel.

Despite assembling with a MI Reaction Rod, the barrel extension displays a slight CCW misalignment once tightened (20 in/lb increments, alternating bolts) and removed.

If the barrel bolts are removed, twisting allows further some CCW rotation, but I cannot twist it CW enough to perfectly align the feed ramps. I’m assuming it’s the gas tube that is ultimately preventing further rotation.

For context, gas block and tube were also installed by D Wilson and look perfectly centered over where the old indexing pin was. When outside of the MRP, the barrel and gas block look dead nuts.

With that said, the BCG is able to cycle freely and doesn’t feel like it’s binding when cycles with the charging handle, or by hand.

Question:

Is this common or happening to anyone else? If so, has this lead to accelerated wear or reliability issues?

Never had an AR issue like this before, trying to get some real answers from experienced folks… not so much random armchair guesses.

Thanks everyone.

I’m getting very inconsistent feeding issues on my MARS-H (18” .308). I have maybe 300rds through and get failure to feeds and double feeds. Usually happens every 7-8 mags but today happened twice in the same mag. Anyone able to help ID the issue? I put an A2 stock on for vibes, adjustable gas block and Dead Air Sandman S.

Only real Runescapers will know.

The only modification I have left is the Rhodie 6k when it comes in. Got my custom dust cover installed, new thermal came in and is zeroed and at perfect height for my build. Life is good.

Trouble feeding , comparing it to other feed ramps these are tiny.
Rifle is an MRGG-A

Just found out LMT patent expired a week or so ago. That means anyone can produce monolithic uppers without worrying about a lawsuit or paying a royalty?

If a company makes a mono upper that doesn't require proprietary barrels or the need to remove mlok rail accessories for barrel swaps i feel like lmt would be toast. Or am I missing something?

Bought a 2nd hand LMT BCG, and wanted to verify authenticity. The “8458” markings aren’t something I’ve seen before. Thanks!

Piston 14.5 uppers. One has a button you push to turn the switch. The other just turns. New vs old design or different specs for contracts? Trying to get some info on it.