Well good luck, I look forwards to buying one when they are ready.
To the metallurgy question, again I am not an AR specialist, I am actually quite ignorant on the specifics of the gas-block design. If no-one does it with cast 6061-T6, then it obviously is not necessary.
What sort of finish? Anodized Black?
guess I should I start collecting uppers, stocks and furniture.
Before we get into the 1000 designs that we had with the CGN lower... Can we just get one... Rick if you open a pandoras box and have 1000 submissions you will have 1000 different submissions.. put your foot down at some point..
Milspec is to use 6061 aluminum which is much softer and has no where near the tensile strength of 7075. I would think that if this was a concern someone in the AR building business would have brought the defect to the attention of the masses sometime over the last nearly 40 years that these guns have been in use.
I'm no oracle either, but I have some knowledge in these matters and can respond to your request to correct some errors.Understand I am not an AR15 oracle, so if anyone has info on this, now would be a great time to bring it up.
Cheaper alloys are not commonly used in AR15s, 7075 is the common alloy. To the issues listed (air pockets/inclusions), I think you are confusing castings with forgings, these are/were potential issues with cast parts, not forged parts. Forged aluminum parts are inherently stronger than machined billet aluminum parts of similar grade aluminum.Billet aluminums quality is vastly superior to castings or forgings, air pockets or inclusions in billet material is virtually unheard of. The reason I am using 7075-T651 is that it is considerably more structural than the cheaper alloys commonly used.
I agree
The sample product and major marking data has been submitted and apporved by the CFC, so things like serial number prefix and manufacturer info can not be altered unless we do a Gen 2...
The right side of the mag well has been the area submitted for our required markings , the only thing that can be altered here is the last part of the serial number, the left side is where any other engraving may be done.
Yes we need you to produce this!
I would like to see a picture of the "standard" version.
No goofy markings.
Do you plan a simple fire selector with just "Safe" and "Fire" and
markings on the receiver with just the company info?
I don't want zombies or Molon Labe on my rifle.
I'm no oracle either, but I have some knowledge in these matters and can respond to your request to correct some errors.
Milspec is 7075-T6 Forging, not 6061. I believe all the lowers on the market in Canada are 7075 (definitely DPMS/Colt/Stag/Armalite/LMT/RRA/Bushmaster anyway).
Cheaper alloys are not commonly used in AR15s, 7075 is the common alloy. To the issues listed (air pockets/inclusions), I think you are confusing castings with forgings, these are/were potential issues with cast parts, not forged parts. Forged aluminum parts are inherently stronger than machined billet aluminum parts of similar grade aluminum.
Some good threads on ar15.com and elsewhere which expand on the this if you'd like to read more.
http://www.ar15.com/forums/topic.html?b=3&f=4&t=408089
All the best,
DT
PS: Nice looking lower!
That's only correct when the "grain flow pattern is oriented in the optimal direction", and for certain alloys. TRG-42 did a nice job on this here.Forged aluminum parts are inherently stronger than machined billet aluminum parts of similar grade aluminum.