Disassembly of the HK MR556A1

[pccoder2671]

Seems the parts that we are not a fan of are the reason it's such a tight fitting system. I'm seriously considering buying one.

[Sturmgewehre]

@pccoder2671 It's a very good rifle. The parts I'm not a fan of aren't responsible for how tightly the parts fit. The tightness comes from the precision machining of the parts. I do like my rifle and have no intention of getting rid of it. It's one of the more accurate AR's I've owned.

[pccoder2671]

@Sturmgewehre fair enough. I'm buying one this month.

[HKMaster556]

@Frankfitz: I'm actually having an issue with the front pivot pin on my MR. For some reason while getting some range time in, the detent and detent spring got jarred lose and fell somewhere around my range. I was able to locate the spring, but no detent. Any suggestions?? H&K said this Was the first they've heard of. The day I called they were field testing the 762, so I gotta try to get the head MR guy on the phone again today....

[elox02]

Just not a fan of piston AR's

[bob18robert]

you are one lucky motherfucker to have that rifle

[TheActiveAssault]

I don't see $5000

[meljenzo]

Which is the better rifle: the HK MR556 or the FN SCAR 16? Looking at both of them.

[Frankfritz]

Just replace the take down pins if it bothers everyone that much.....

[HammeredAndHorny]

Seems like an over-complicated AR. Cool... but unnecessary.

[nesskafaen]

so the main difference between this and hk416 is that 416 doesnt require tools to dissasemble and doesnt have family mode? got a 416N myself :)

[norwegianwiking]

@nesskafaen i thought i remembered the norwegian version didn't need the tool for the takedown pins. and there's a piece on the sling to unscrew the handguard, isn't there?

[nesskafaen]

@norwegianwiking yeah there is a tool integrated on the sling but people rarely use it because you can tighten/untighten it with your hands just fine.

[MultiSr16]

nice handguard on these., that special tool and buttstock sux though.,., all in all , NICE UPPERS, i want this on a ambi KAC lower with sopmod

[Dingusmaster792]

As wonderful as an over-priced piston AR may be I MUCH prefer my DI AR.

This video was very informative and taught me that this gun has clearly been over-engineered to the point where it's become a great inconvenience to the user.

[esh325]

@Dingusmaster792 I would at least try it out before you trash it.

[MrSGL21]

ok so all the important easily lost parts are basically captive but i need a special easily lost tool to take it apart. It also couldn't be zeroed because you need a special tool to adjust the elevation. and it cost $2500. and it doesn't work with pmags. i could get a scar and an aimpoint for what this thing costs.

[freakinrecordschris]

You can use a round to disassemble the rifle with. I have done it.

[QuagmiresGiggity]

When the feces hits the fanblades I'll stick to my AK, than you very much. No gimmicks, no special tools, just good ol' fashioned reliability in any climate and condition.

[CarlRF99]

I'd buy the upper! Forget the lower, rather get a KAC lower receiver to go with HK upper :)

[F35Lighting2JSF]

The only thing that I thought was cool was the fire pin retaining pin slides so far and locks I droped mine last lol but other then that the rife is just a more complex sr 556

[lvcsslacker]

This.. is just stupid for disassembly. You'd better pray you don't jam up in a firefight with it...

I'll give them precision... that's as far as that's gonna go though. It's overly complicated. plus needing to rebuy some magazines or switch out the lower to use what you've got? That just sounds like a bad investment.

[Nater245689]

@lvcsslacker Well, the HK 416 has regular push pins like every other AR. At least in the take down video that I saw, it had standard push pins. I don't really see the appeal of the MR556A1 unless you're a die hard HK fanboy. Looking at the compared to an LWRC M6A2, with it's EXO coated bolt/bolt carrier, 41V45 nitrided barrel, even stronger bolt, and Cerakote finish...you wonder where the extra $200 goes.

[Panos9133]

@lvcsslacker it doesn't jam it's H&K made :P

[BigSean1992]

thank you for reminding me why i will stick with a SGL21 >.<

[RakishTilt]

Wait... @4:39 Standard AR-15's have a spring on the firing pin??

[opmike343]

@RakishTilt

I'm sure it's just a goof.

[hapelliotte]

all that money and there is nothing that special about this gun at all.

also, I DONT like the weight, which hk did because they were having trouble with the piston causing the barrel to whip. other short stroke pistons have engineered around this instead of simply adding howitzer barrel

[rupert93r]

@hapelliotte Right, which is why the HK 416 has a really heavy barrel as well...oh, wait (it doesn't, is what I'm saying).

[opmike343]

@hapelliotte

Do you have any sources backing up the claim that HK went with this ridiculous barrel profile because of barrel whip or is that just more internet lore?

[hapelliotte]

@TheQ3XXX yes, it has nothing to do with VAT. it's

HK of Germany's insane pricing that is the same in europe.

$4700 is about 3 times what this rifle whould be

[theprezz]

Hk: we make rifles more complicated and expensive.

[Joseph2010MK]

To disassemble the handguard, can't you use the bolt lugs, like HK have shown with the HK 416?

[RuthlessZabusa]

Could you replace the take down pins with standard AR pins?

[Sturmgewehre]

@RuthlessZabusa I believe you can, yes.

[rookieshooter1]

@Sturmgewehre I replaced mine last week and it seemed to be ok. I haven't shot it yet since I replaced it but it seems to fit fine.

[bravowhiskey223]

nothing about this rifle makes me want to buy it if i want propitiatory parts including the hand guard disassembly the barrel is way to thick i hate the m4 profile but this is just to heavy and expensive.

[Randys138]

SCAR 556 vs MR556????

[bulld4wg45acp]

That tool makes this rifle a no go. Oh and great, it's not standard to any of my other AR's!

[MotorCityPrepper]

It's astounding to me how such a fine company, making such a fine rifle could screw up on something so big as to have the rifle depend on a tool for takedown and the reverse. HK engineers are not stupid; they know this is not the best way to create a product. I think they just wanted do set their rifle apart by making it different. Dumb idea. I would never buy that rifle, unless the aftermarket came up with a system to replace those stupid pins. This kind of stuff amazes me to no end.

[DudeNumberOnePlus]

Just googled it a bit... seems those cock sucking frame pins are some kind of law-compliant gizmo, maybe german law forbids AR's to be offered on civilian market if they can be disassembled without tools. Sure thing is, military version (hk 416) uses simple pins and can be taken apart without the little stupid tool, vids of this are on youtube.

[G1721jeff]

If you buy a different lower will you still need the disassembly tool?

[Everett07630]

I was wondering if the HK MR556A1 was worth the cost, and I completely agree that it's not vs a standard mil spec AR15. $2,500.00 seems better spent on a FN SCAR16S. Even so, that too is out of my price range. At least the SCAR has a barrel that's guaranteed for 20K under normal use. And it's lighter weight.

[millster101]

Excellent video on disassembling the hk . Was wondering what your opinion is on the POF ar's compared to other piston driven ar's .

[Sturmgewehre]

@millster101 I haven't had much first hand experience with the POF AR's outside of just handling them. I'm not a big fan of the AR piston guns in general, I prefer DI guns. Since I have to purchase every firearm you see in these videos, and given my lack of interest in piston AR's, it might be some time before I invest in another expensive gas piston AR. :)

[the308capital]

Every part is different just enough to require paying up the ass for HK only replacement parts. Don't get me wrong, HK makes good guns but damn does their pricing on everything suck. I was looking at buying a USC years ago and the big deal breaker was the $130 10 round magazines not to mention all the overpriced accessories. $50-70 for a USP 45 mag? Sorry HK, you're good, but not $2800 for an AR requiring special parts and tools good.

[rustlerbadass]

if you click on the hk mr556a1 by gunwebsites video on the left...then click on HK416 by gunwebsites it says you dont need any tools to dissasmemble it.

[rustlerbadass]

cant you take the rail off with some spot on the bolt? i saw a video where they did

[snowface27]

how does it feed the cartridge in the chamber?

i dont see a feeding lug. or is the mag high enough so the bolt face can feed?

great vid though :)

[DudeNumberOnePlus]

@snowface27 Yup just like any other ar-15

[Inev1t4bl3]

Note that one can replace the take down pins with standard ones if they wish.

[Hiluxtaco]

Nice review!!

.

[hapelliotte]

You know what's INSANE? In Canada and Europe, the same gun from HK Germany is

$4700 USD!!

Thats a really nice way hk is telling civilians buyers to f*** themselves.

Even in the US, the new sig piston rifle is wildly cheaper, I wonder how they compare preformance wise etc.

[rdeeeezy]

Fail on needing a tool in order to break it down.

[tuberaider]

So far, I'm liking the uppers.

[bigmeatieballs]

@tuberaider me to i just dont like that it weighs so much but i like that barrel

[STi2S2K]

Im not diggin' the need of the disassembly tool.

[ForTehNguyen]

ok n/m cant use a bullet tip, sent the comment before the end of the video

[ForTehNguyen]

man wth you cant use the takedown pins without that tool? Can you at least use a bullet tip?

[jamiesxe]

hi

iv been looking on atlantic fire arms for that arsenal ak74 for 550 you reviewed a while back can you send me a link, im not sure witch one it is