DPMS Upper receiver rail height again

[nrthpole]

Lets talk DPMS rail height again

 

Picked this DPMS LR-308 24 in bull barrel at Cabelas  the other day.

Wish wishing to upgrade with a new fwd. rail buy immediately ran into confusion as a lot of people do.

All the information I am finding regarding two differing rail height on the receiver still doesn't come close to what is on my upper receiver.

Did DPMS change the height again?

Anyone else have this type and were you able to upgrade without buying a new upper.

Pictures attached shows measurements.

[blue109]

That is the "target" or "hi top" rcvr. No aftermarket railed handguard will match up with it. DPMS makes one, but they are hard to find and weigh a ton. Most people just end up buying a new upper and swapping the parts over.

[nrthpole]

Thank you

 

 

Do you know if that railed hand guard you referred to is on the DPMS web site? They have one with 4 rails for $189.00 but not sure if that was it

[blue109]

It should be, and I've seen it on midwayusa also. I had the part number written down somewhere...I'll poke around for it.

[nrthpole]

Appreciate the information I was totally lost with this height issue

[Dane Armory]

I don't have one in front of me BUT... the one in the picture is the old (orignal)highrail upper. It is 9/16" high and comes on the round handguard setup. The New low profile 7/16" rail height upper is the one which is adapable to the dpms quad rail which is being sold now. The old rail is good for a scope rings so use it for that. When you upgrade get the low profile upper and matching height quad rail that you desire. Sorry if that is not what you want to hear but that is why many people sell the old dpms upper.

[blue109]

DPMS does make a quad rail for that monster....but it's not very popular, or practical. Scopes or irons would be way over bore. I feel your pain...I had one and wanted to mod it. In the end you are better off swapping.

[EasyEJL]

so far as I recall, the try MRF and TRX were both made in high

 

And here the TRXs are at midway, on clearance. they might have the MRFs too

 

http://www.midwayusa.com/product/3058127294/troy-industries-trx-extreme-battle-rail-modular-free-float-handguard-dpms-lr-308-with-high-profile-upper-receiver

[blue109]

Easy...we're not talking about the old A3. He has the "high" upper. Damn you DPMS for this confusing situation lol

Edited November 26, 2013 by blue109

[EasyEJL]

Oh geez yeah, I see now looking at his pictures. I guess I assumed that after the recent craze, even finding the older A3 would be unlikely, particularly at a cabelas.

 

What the hell was that still doing in the Cabelas? when was the last time they manufactured those? I guess it could have been a used one traded in? No cabelas local to me so I don't know if they do that.

[blue109]

I think they still make it. It makes sense for a pure target gun using some massive 50+ mm objective scope. Just sucks for us tacticool types lol.

[nrthpole]

This was Cabelas latest shipment, so I was told. New in the box.( I did witness that) Guess I will have to dish out some more dollars to get the new upper., I hope there is no other fitment issues.

When I zoom in on some of the photos on the DPMS web site they look similar.

[Cali_Ed]

Did not want to make a new thread found this with a search. All the receivers i look at like si defense and jd say high profile are these the ones with the screwed up rail hieght? Not trying to deal with dpms bs so which ones are normal?

Edited January 17, 2014 by Cali_Ed

[shibiwan]

No, "High Profile" is the current standard height while the "Target" or "Hi-Top" ones are extended height found on the "target" models. Most manufacturers make their uppers in the DPMS "High profile" height.

 

There is also the newer  DPMS "low profile" upper receiver that is 1/16" shorter than the DPMS "high profile" receiver.

 

Here is a pic. - Remember that the DPMS "High Profile" is the standard that most manufacturers use. That tongue thickness is 3/16" on the high profile while the low profile thickness is 1/8"

 

The following pics show the DPMS "Target"/"Hi top"/"high rise" LR308 receiver. Note the thick tongue above the charging handle slot. These target uppers are fully extruded and are usually slicksided (i.e. no deflector, f/a, or dust cover).

 

Edited January 17, 2014 by shibiwan

[Cali_Ed]

Thanks a bunch shibi