Longevity and the ability to handle (dissipate) heat better.
For the average plinker, a chrome lined 4140 barrel will most likely serve them well. My issue is that I think 4140 and or 1/9 twist barrels generally equal tight chambers. To date, there isn't a single 1/9 twist barrel that I have put my 556 NATO reamer into that hasn't returned material.
C4
Here is my re-sort with individual items ranked within their groups:
Most important Items:
Black Extractor Spring Insert / Crane O-ring / D-fender
Properly Staked Gas Key
Staked Castle Nut
Pressure Test (HPT) Bolt
MPI Bolt
Milspec Barrel Steel
Shot Peened Bolt
5.56 Chamber (my personal opinion is that the Wylde is also a very valid chamber, but not if it's to be chrome lined.)
Chrome Chamber & Bore
"Conditional" Items (meaning personal needs/taste/preference):
"H" Buffer (this has more positive result than an M16 carrier as long as a shrouded carrier is being used)
Milspec Dia. Receiver Extension (depends on stock fitting requirements)
1:7 Rifling Twist (depends on ammo choice)
Pressure Test (HPT) Barrel
MPI Barrel
F Front Sight Base (FSB)
M16 Bolt Carrier
M4 Feedramps
Relatively Insignificant Items
Double Shield Handguards
Milspec Dia. FCG Pins
Taper Pins at FSB
Parkerize Under FSB
Randall Rausch
AR15 Barrel Guru
Well, let's give it a stab this way
Critical:
MPI Bolt
Pressure Test (HPT) Bolt
Shot Peened Bolt
Black Extractor Spring Insert
Properly Staked Gas Key
M16 Bolt Carrier
Milpec Barrel Steel
MPI Barrel
Pressure Test (HPT) Barrel
Chrome Chamber & Bore
Personal:
1:7 Rifling Twist
5.56 Chamber
M4 Feedramps
F Front Sight Base (FSB)
Milspec Dia. Receiver Extension
Staked Castle Nut
"H" Buffer
Other:
Taper Pins at FSB
Parkerize Under FSB
Double Shield Handguards
Milspec Dia. FCG Pins
Where does everyone think that the warranty should go? I have it completely separate now, because I don't see it as a deal breaker. If you do all of the critical stuff right it shouldn't be an issue, and if you don't you'll likely know it within the first year.
I agree with what your saying. The two manufacturers I have talked to about inspecting their steel before machining, do not subcontract that work out. They also batch test to make sure they catch a bad run.
If we could get our hands on an up to date TDP, it would tell us what the Govt requires as far HPT/MP.
C4
Last edited by C4IGrant; 08-09-07 at 12:15.
I personally think the warranty info should go in the trash! Why? Becuase it has been my experience that companies that push their 'life time warranty" tend to have tons of loop holes in it. Manufacturers that make zero mention of any warranty, always cover a broken part (YMMV).
C4
Also, if I break it out into these categories, do I add back in the numbers?
Rob, would it be prudent to mention the manufacture of different FCG parts? By this I mean MIM, cast, different types of hammers, etc.
I don't know enough about the different manufacturing processes to say which is better, but I'm sure that they differ from brand to brand.
I keep hearing about my gun rights, but I just can't seem to find them.
Ok I read the response. They want people to believe that they are going above what the TDP calls for. That maybe true, but it is nearly impossible to tell with out seeing them in quantity over time.
Since the chart is specifically dealing with how manufacturers follow the TDP, I wouldn't change anything in Oly's column.
C4
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