LMT Piston

[jakhamr81]

I've noticed that my LMT piston (as with all other piston ARs) has a pretty hefty recoil. It was bad enough that it continously knocked my trigger pin out of place. I replaced the pins with some KNS anti-walk pins which solved that problem.

Today I tried out an H3 buffer that signifgantly reduced the felt recoil and functioned flawlessly. I fired some 55 grain PMC and 77 grain Black hills. I only fired about 300 rounds, recoil felt good, not at all sluggish and the bolt locked back on every empty mag.

 

[Jer]

Re: LMT Piston

Really? I have a 12" LMT MRP piston and I wouldn't say it has any more or any less recoil than any of my DI guns.

 

[jakhamr81]

Re: LMT Piston

Have you shot it right after you shot a DI?

 

[Jer]

Re: LMT Piston

Yep

 

[jakhamr81]

Re: LMT Piston

Hmm, I'm shooting a 16 inch upper, i wonder if it is the spring on the op rod

 

[Double-edged]

Re: LMT Piston

My LMT MRP gun seems to have LESS recoil than a similar DI AR, though it DOES have a really heavy barrel...

 

[jakhamr81]

Re: LMT Piston

Interesting, 12 or 16 inch barrel?

 

[merc]

Re: LMT Piston

I have a 16" LMT MRP Piston and it has a very soft recoil. I replaced the A2 with a Titan comp and now it shoots really flat.

 

[Moadster]

Re: LMT Piston

Try a brake as well. I have a PWS 556 and it's awesome on my LMT.

 

[Jer]

Re: LMT Piston

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Moadster</div><div class="ubbcode-body">Try a brake as well. I have a PWS 556 and it's awesome on my LMT. </div></div>

This is also the brake I run (w/QD suppressor threads) and it's extremely effective. You can hammer fire a full mag of 30 & the dot of the Eotech barely quivers. Highly recommend.

 

[jakhamr81]

Re: LMT Piston

The recoil doesn't really affect my shots or follow up shots. The way I noticed it was in the buttstock. When shooting prone I rest the mag well on the ground (contrary to popular belief this will not induce a malfunction). When shooting like this I could really feel the buffer jaring my face. I put an H3 buffer in and that really made a difference.

 

[merc]

Re: LMT Piston

you might of been able to get a tuned buffer spring for it for alot less

 

[jakhamr81]

Re: LMT Piston

I had an H3 sitting around that I wasn't using from an abandoned AR 10 project.

 

[paulo_santos]

Re: LMT Piston

I run the Suprior Shooting Buffer Spring on mine with the regular carbine buffer and it is the softest shooting AR I've had.

 

[jakhamr81]

Re: LMT Piston

I might have to give that a try. It would defiantly cut down on the weight.

 

[SoundFx]

Re: LMT Piston

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Double-edged</div><div class="ubbcode-body">My LMT MRP gun seems to have LESS recoil than a similar DI AR, though it DOES have a really heavy barrel... </div></div>

This has been my experience both times I shot the new LMT uppers. I wonder if yours if overgassed or something? The thing I took away from both times shooting them was how much <span style="font-style: italic">less</span> recoil they had compared to their DI counterparts. My old LWRC, by contrast, had far sharper and less pleasant recoil. Not that it was uncontrollable, but the difference was really there.

 

[Aries64]

Re: LMT Piston

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: SoundFx</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Double-edged</div><div class="ubbcode-body">My LMT MRP gun seems to have LESS recoil than a similar DI AR, though it DOES have a really heavy barrel... </div></div>
...My old LWRC, by contrast, had far sharper and less pleasant recoil. Not that it was uncontrollable, but the difference was really there. </div></div>
Really? I don't know if its' because of it's <span style="font-style: italic">true</span> mid-length system or H2 buffer & spring assembly, but my M6A2-S shoots at least as "soft" - possibly moreso, than my old Bushmaster 16" Shorty (HB Carbine-length gas system) did when shot in succession.


Keith