jetdr: The main reason 7075 is used over 6061 is corrosion resistance. has nothing to do with strength. I like Rainiers ultramatch set, but Mega is very high quality as well.
y3sterdy: Whats the little rod bolted in front of the safety?
BloodSport06: why is the top rail of the handguard sitting so much lower then the rail on the upper? i was thinking about buying this upper till i seen this. do all rails sit lower then the rail on the upper?
red77j: i just bought a mega stripped upper the other day. i'm waiting for the billet upper to come in. great video.
David Nguyen: I know you may not have money enough to afford another receiver but what is your opinion the AXTS AX 556 a-dac lower receiver? I myself have one but I'm at a loss as to why no other manufactures have address a unique feature of being 'fully ambi' which includes being able to lock the bolt to the rear on the right side of the receiver.
stabnshoot: I just don't understand why people get such a hard on for billet machined objects.
The material has to be softer because every operation is done on a mill, nothing can be preformed. On top of this they're more expensive because more has to be done to them to get the desired shape.
So you're paying more money for an inferior hardness...
Unlike on a forging which can be made out of a harder material, and since the machining is minimal, there's much less material to be refined.
howyoudone: Great detailed video! What lpk is that?
vincent vega: I machine billet uppers and lowers. I designed my own cosmetics for these which was and still is fun. I started out with the better grade of aluminum but changed to the 6061. The less expensive aluminum has caused more problems in machining. I've found it to be softer and although average tool life is longer as far as everyday wear and year goes, there are risks with the softer aluminum that have proven more costly than the continuous and regular costs of normal wear and tear.
MASTERNCS: For common civilian use AR 6061 T6 is a great choice in material. I wonder how they port the magazine well, is it milled/broached or is it wire EDM cut? I think they do a killer job for the price and the finished product they offer is top notch. Great choice.
Liam Pitman: In your opinion what rail would you recommend for these receivers(preferably modular)? Also, do you think the rainier arms evo rail would fit?
Liam Pitman: How do I know whether or not I need the feed ramps machined in?
TheShrambo: As far as Mega billet lower receivers, what is the difference between the GTR-3H & GTR-3S?
Decurion08: If i purchased the Mega upper and lower billet separately, would they still work good, as far as tightness goes?
TheJmc1975: TOKAREV NATION DOT COM
FreshurricaneSix: i realize this is a year late but that's just how mega stamps their billeted lower receivers.
3zib: KNS anti rotation pins
mosin9105: I had no problems with my Mega build. I've built three ARs, all different receivers.
BoostedTT91: Whats the little rod bolted in front of the safety?
Babcock Blades: I really like how your reviews are to-the-point, though I do disagree with you on one point in the review: When you said that 6061 is easier to machine than 7075, I believe that it's more of a marketing ploy than anything. In my experience I find very little, if any difference between 7075 and 6061.
If someone would walk up me and me two aluminum plates and say "Machine these", I honestly wouldn't be able to tell the difference.
As a disclaimer: I'm no expert, and taught myself for 2 years.
nukedude: I have built many AR style carbines: several Rock River, a couple DPMS, Spike's Tactical and a Colt, and a friend brought a Mega lower over.......way too tight in many areas. Buffer tube, pistol grip screw hole and bolt catch pin hole way too tight. Will stick with receivers made by Aero Precision first. It does look tough (Mega), but was a pain to put together.
Mega Machine Shop Billet AR-15 Receiver Set Review5
out of 5