User Panel
dude, awesome shooting with irons. I wish mine would look anywhere near that with 5 rds...
I need more practice. |
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That looks like LMT went to town on improvements. Great looking rifle.
How's the accuracy? |
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Thanks for the compliments guys.
That group was shot @ 100 yds, with open sights from sandbags, not really a great feat of marksmanship. I shot NRA Service Rifle for several years, and saw many shooters that could hold 12" groups prone at 600 yds all day long. The group measured at 3 ", minus the sighters. |
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Nice Rifle! I have a feeling the LMT is going to be one of the Best piston systems on the Market.
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How much are they? I am looking at my second AR, and I want AK-like reliability...but with an AR-15...
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Very cool. Glad to see these shipping. Those of us who already own MRP's should be able to drop the piston barrel conversion in our existing receivers, right?
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I believe they will drop right in the QCB MRP's, At least thats what LMT told me when I ordered a piston conversion for mine. |
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That is what I get from it too. Looking forward to picking up the 12.5 in the future. |
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I have read that LMT may ask some owners to send their uppers in to fit an aluminum sleeve where the gas tube enters the upper. This is to prevent the piston from stressing the upper. As I understood many of the new ones may have this feature. I haven't checked mine, but I don't plan on buying this just yet.
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new-arguy, the LMT rep @ SHOT told me you would be able to switch from piston to DI and change calibers on any MRP with no problem. I'm thinking about a 6.8 DI set up. The 6.8 piston isn't available yet.
forrestallflame- $2000 retail |
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Any ideas on the price difference between the older barrel packages, and the newer piston equipped ones?
Will the Piston MRP uppers accept the older impingement parts (with the gas BCG) |
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Yup, that is the info I have gotten as well. |
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Really a great report with really great pictures. Like everything that LM&T puts their name on it's a quality product. Give us more Info. as time pass's and you do more shooting.
One item I would like LM&T to address is their use of a cardboard box they send them in as many other AR Mfgs. use a much better type of box for the protection on their ARs. |
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Yes, I agree about the shipping box. Everything in the box was wrapped in plastic and bubble wrap though. Some kind of a hard case would be nice.
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Great review. Thanks for taking the time to post it. My only concern with that system is the potential for flex in that long, skinny piston. I'm going to let it get some street use before I consider buying one.
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Great review.
I was looking at these for awhile now. I may now consider that offer I got on my Microtech MSAR for one of these. |
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What are the things on the sides of the gas piston head? They kinda look like gas rings.
BSW |
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Beautiful gun man, hopefully i will have the money to add one of these to my collection before it is too late
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Mine came in today!!!!!!!!!!!
Will post pictures when I get time... Man, that was a loooooong wait!!!!!!! Looks to be well worth it though!!! |
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I'm looking at a 1st SBR being their 12.5" upper.....already have the lower. I guess they'll be released towards the 1st quarter of 09.
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briansmithtwins-Yes those are gas rings, the manual says don't remove them.
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Freakin' awesome rifle! I have a CQB MRP and cannot wait to get the piston kit. This maybe a dumb question but I don't really know much about the piston setups. Where does the gas bleed off from on the LMT piston setup (towards the front...up..to the left side)?
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+1. Exactly where does the excess gas vent? |
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Great question about the gas venting, my understanding is that LWRC dumps the gas into the hand guards . How about LMT?
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So they copied one of the weak points of the DI gas system by moving the rings onto the bolt head? Are they at least standard AR gas rings if you need a replacement? BSW |
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The gas vents from the gas block. The gas rings are smaller than AR bolt gas rings.
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how are gas rings a weak point? do you EVER know what you are talking about? |
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I assume away from your hand if you had a forward vertical grip correct? I'm so jealous. |
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The gas appears to vent from the back of the gas block in front of the handguard, when the piston moves toward the bolt carrier. I didn't notice any heat on my hand while firing, but I wasn't doing mag dumps either. I don't think heat is going to be a problem, the bolt carrier group stays nice and cool, that's where it counts. I took a bunch of pictures today, including close ups of the gas block areas. I'll try to post them tomorrow.
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Fine looking rifle! I don't mean to be a jerk but is that the same model as this one?
https://policeguns.com/catalog/product_info.php?manufacturers_id=137&products_id=6050&osCsid=nla0760f1f8rapte6bbeps0a57 $1500.00 instead of 2K |
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That is the original DI model of the MRP. |
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Ya, the OP has the gas piston system which is supposed to be more reliable, and the cheaper MRP has the standard direct impingement gas system. |
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Saturday, September 13, 2008
An excellent review of the LMT MRP Gas-Piston (GP) operated upper receiver! A much better review than the ones that I have read in the gun press! I am not surprised by the quality and excellent engineering of this LMT MRP Gas-Piston (GP) operated upper receiver; this is something that LMT owners – like myself – have known for a long time! The gas-rings on the LMT MRP gas-piston head are not new; the H&K 416 has a similar gas-ring arrangement (H&K part number 205 383). I have been in contact with Lewis Machine and Tool and the 12.5 inch version is scheduled to ship in December! I cannot not wait to try out this bad boy for Christmas! |
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Gas rings are not a “weak” point in the Direct Impingement (DI) system! It is piping the hot and dirty exhaust gas directly into the receiver – bolt carrier group that may, like myself, consider the “weak” point about the DI system! And no, these are not the same gas rings and yes, according to LMT, spare replacement gas rings are available! |
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Great work on the review. I'm glad but not surprised of the quality and workmanship that LMT brought to the table.
I'd like to see someone run a future test with different (75&77gr) ammo out to 300yds to see what it can do. I don't have any doubts that it will do the job. |
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