Registered DIAS for AR best HK, LWRC, Lewis?

S

Sig550223

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Minuteman
Aug 25, 2009
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#1
If you had to pick a platform for a registered drop in auto sear. And will all of these take a DIAS?


1. LWRC m6a2.
2. Lewis Machine tool Piston gun.
3. HK 417/416 if it ever comes out.
4. LWRC REPR .308 package with 20inch and 12.5inch.
 
#5
Re: Registered DIAS for AR best HK, LWRC, Lewis?

LWRC and LMT are GTG in my book. Still have my LWRC. Never used an HK though.
I believe the HK MR556(civi version) will mainly only work with HK parts. I'm sure there are some parts that are interchangeable, but I do know the upper on them is not compatible with the standard AR platform because one of the takedown pins is in a different location. I guess that would mean the lower is ony compatible with HK uppers. LOL
 
#7
Re: Registered DIAS for AR best HK, LWRC, Lewis?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 18Echo</div><div class="ubbcode-body">Colt LE6920 with SOCOM heavy barrel. </div></div>

Only problem with that (Other than the fact it's made by Colt's) is that it won't work with a RDIAS.
 
#8
Re: Registered DIAS for AR best HK, LWRC, Lewis?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Jimmy2Times</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 18Echo</div><div class="ubbcode-body">Colt LE6920 with SOCOM heavy barrel. </div></div>

Only problem with that (Other than the fact it's made by Colt's) is that it won't work with a RDIAS. </div></div>

If you can afford a RDIAS you can pay someone to hog it out. Are you sure the shelf isn't already low enough? I know mine doesn't have a block in it. As for the other statement, all others are just copies of Colts
grin.gif
 
#9
Re: Registered DIAS for AR best HK, LWRC, Lewis?

If you are willing to pay a machine shop or good Class 2, any can be made to fit.
Only one I have tried is LMT, slelf is too high and rear would have to be rounded out.
Don't hold your breath on having a HK.

CMMG has the correct dimensions as does the OLD Bushmasters. The new Bushmasters will not fit.
J
 
#11
Re: Registered DIAS for AR best HK, LWRC, Lewis?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 18Echo</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Jimmy2Times</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 18Echo</div><div class="ubbcode-body">Colt LE6920 with SOCOM heavy barrel. </div></div>

Only problem with that (Other than the fact it's made by Colt's) is that it won't work with a RDIAS. </div></div>

If you can afford a RDIAS you can pay someone to hog it out. Are you sure the shelf isn't already low enough? I know mine doesn't have a block in it. As for the other statement, all others are just copies of Colts
grin.gif
</div></div>

Sure you could have the sear block removed, anything can be done. But why go through the trouble, why not just buy a sear ready gun? And after paying for a RDIAS, who could or would want to pay to have the sear block removed? I guess if you're dead set on a Colt. Not me, I wouldn't own a magazine that said Colt's on it.

As far as everything else being a copy of a Colt, I don't know about all that. After all, a Colt is just a copy of an Armalite, right?

I know you were making a joke
laugh.gif
, I'm just keeping it real up in here.
laugh.gif


Edited to add: Excellent advice from jhrtx and Mark S. as well. Spot on.
 
#12
Re: Registered DIAS for AR best HK, LWRC, Lewis?

In my experience, I don't have a lot of use for full auto unless I'm carrying a SAW or 240. I wouldn't pay the money for a drop in sear. I think people pay way too much for the novelty. The functionality and practical use just doesn't pay off, IMO. I think cans are a much better investment.
 
#13
Re: Registered DIAS for AR best HK, LWRC, Lewis?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ZLBubba</div><div class="ubbcode-body">In my experience, I don't have a lot of use for full auto unless I'm carrying a SAW or 240. I wouldn't pay the money for a drop in sear. I think people pay way too much for the novelty. The functionality and practical use just doesn't pay off, IMO. I think cans are a much better investment. </div></div>

Investment, no. MG's go up in value, cans don't. But I gather you meant to say the money is better spent on a can than full auto. I would generally be in agreement with you on that. However, in certain situations, a full auto weapon in the hands of an experienced user is definitely a force multiplier. As for the DIAS, it is an extremely versatile NFA item, as it can be used in any number of hosts.
 
#14
Re: Registered DIAS for AR best HK, LWRC, Lewis?

Yeah, you got the jist of what I was saying. I still have a lot of civilian friends that want to shoot a full auto weapon because of the mystique created by movies and video games. Fact is, a trained operator can do 95% of what an M4 can do with an AR15. So the question becomes, is the money better spent going to schools and learning to be a trained operator, or on having a select fire weapon? I don't deny the cool factor, but personally I would rather have a can any day than a lower that has burst or full auto capability.
 
#15
Re: Registered DIAS for AR best HK, LWRC, Lewis?

Are their any .308's that will work with a RDIAS? Thanks guys for all of the information but now I fell even more confused. As far as the debate on the usefulness of a RDIAS, I like them for a multitude of reasons. My real question is what is the best platform to drop one into?

Why do people have negative comments on LWRC? I have heard favorable things about them.

Thanks again guys for the input.
 
#16
Re: Registered DIAS for AR best HK, LWRC, Lewis?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: ZLBubba</div><div class="ubbcode-body">In my experience, I don't have a lot of use for full auto unless I'm carrying a SAW or 240. I wouldn't pay the money for a drop in sear. I think people pay way too much for the novelty. The functionality and practical use just doesn't pay off, IMO. I think cans are a much better investment. </div></div>

NFA isn't always about practicality, otherwise there wouldn't be guys out there with MG42, M2s, M60s, and Miniguns.
 
#17
Re: Registered DIAS for AR best HK, LWRC, Lewis?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Sig550223</div><div class="ubbcode-body">Are their any .308's that will work with a RDIAS? </div></div>

Generally speaking, DIAS designed to work in the HK-9x series of rifles will work in any HK rifle regardless of caliber. 9mm, .223 or .308
 
#18
Re: Registered DIAS for AR best HK, LWRC, Lewis?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: El Shavewa</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Sig550223</div><div class="ubbcode-body">Are their any .308's that will work with a RDIAS? </div></div>

Generally speaking, DIAS designed to work in the HK-9x series of rifles will work in any HK rifle regardless of caliber. 9mm, .223 or .308 </div></div>

I think you mis-read what he was asking. He is talking about a drop in auto sear, that is for the AR/M16 type family of weapons. The HK sear is different, and by no means is a "drop" in item.

Back the sigs question:

The .308 platform isn't in the same family as the AR. The lowers aren't the same, and the ATF has deemed them to be of a "different" family, so the RDIAS are not usable in .308's. They won't trip in the lower, and I don't know of anyone who has been able to machine the lower to make it work. Long of the short, the RDIAS will only work in AR15 style lowers. You could get an MGI lower, which has 15 or something different cailbers that you could change it around to. That seems to be the best bet to be able to get the most "bang" for your buck. Out of the ones you asked, I've only used the LWRC. Works great. They have a low shelf, and their uppers are made for full auto. I haven't played with LMT, but if others say they are low shelf, then there is no reason they shouldn't work with a FA LPK and bolt. The HK will not work. The 416 upper would work, but you can't get a 416 lower. Even if the civi version comes out, the take down pin hole is in a different place(beause HK hates us) so the drop in sear would not work. Same thing as I said before on the .308's, will not work.

Hope that helps.
 
#19
Re: Registered DIAS for AR best HK, LWRC, Lewis?

By platform do you mean AR15 or AR10? Or do you mean manufacture. DAMCV has given you information on the AR10's and he is correct.
On manufactures, as I said before:
LMT, Noveske, new Bshmaster, RRA(?) - machine work required
Old Bushmaster (pre ban), CMMG - will drop in the receiver.

Now what you may not know, a RDIAS is not always drop in. It may take you a LONG time to get it timed correctly. Incorrect timing of the trip can cause serious injury to you, people around you and the AR.
The sear may need to be moved forward or backward to get the timing correct. Some people drill and tap the rear of the sear and put in a set screw to hold it tight on the upper lug. This keeps it form moving and changing the trip time.

You may get lucky and it fits the receiver tight and is timed correctly. If it is used, it has probably been fit to another receiver and has had metal removed.

You may have to retime each upper you use with the sear.
J
 
#21
Re: Registered DIAS for AR best HK, LWRC, Lewis?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: kchu02</div><div class="ubbcode-body">Why won't teh DIAS work for a Colt? </div></div>

Older models had a block out piece installed in the back of the lower to prevent installation of an auto sear, but it could be removed by a competent gunsmith or machinist. Newer models don't have this, however they simply don't fully mill out the "shelf" portion of the rear of the lower to prevent installation of an auto sear. Obviously this new method is much more problematic.
 
#23
Re: Registered DIAS for AR best HK, LWRC, Lewis?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: El Shavewa</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Sig550223</div><div class="ubbcode-body">Are their any .308's that will work with a RDIAS? </div></div>

Generally speaking, DIAS designed to work in the HK-9x series of rifles will work in any HK rifle regardless of caliber. 9mm, .223 or .308 </div></div>

TOTALLY differant sear and system alltogether.....
 
#24
Re: Registered DIAS for AR best HK, LWRC, Lewis?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Falar</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: kchu02</div><div class="ubbcode-body">Why won't teh DIAS work for a Colt? </div></div>

Older models had a block out piece installed in the back of the lower to prevent installation of an auto sear, but it could be removed by a competent gunsmith or machinist. Newer models don't have this, however they simply don't fully mill out the "shelf" portion of the rear of the lower to prevent installation of an auto sear. Obviously this new method is much more problematic. </div></div>

Older, older Colts (the old "Green Label" will work. The sear was designed for that receiver. This would be the SP1's, etc. The next generation Blue Label Colts had the first receiver block due to an "Agreement" with Uncle Sam.
J
J
 
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