Lets try this again:
Lets try this again:
I've built about 5 receivers from 4130/4140 sheet from McMaster Carr for myself, and bent a few blanks from this for other folks on Gunco, and have had no problems(both .040" and .050"). Not to mention all of the Tapco flats, and AK Builder flats that I have done this method on. Now mind you, I don't have thousands of rounds through any of my 25+ builds, so I don't know how long it takes for a hole to egg out, or an ejector tip to get peened into oblivion. Have there been failures of these areas from the procedure that I use? If so, I'd sure like to know and change my procedure.
I have actually been looking at some of the case hardening products, (Brownell's and Cherry Red) mainly for firing pins, but was thinking about trying it on the FCG holes as well.
I've built about 5 receivers from 4130/4140 sheet from McMaster Carr for myself
The difference is "mild steel" vs 4130/4140 (and similar steel), they need to be hardened in different ways.Quote:
Hey guys, mild steel doesn't harden from simple heating and chilling. It lacks the carbon content.
The build is looking good, I got to stop screwing around and get mine done.
Definitely gotta get yours going Coils. You gonna use that blank I bent up?? If so it should work out great. I was concerned about where the jig through bolt went, and whether it would interfere, but from what I see on mine, it should be dang near perfect.
Just trying to clear up the confusion :D
Well all the different grades of steel gets me confused, too many out there and they all have different characteristics.
Yes I was going to try using one of those blanks I got from you. Got to get some other projects (non-gun related) out of the way first.
That looks NICE!
Thanks guys!! Unfortunately some major medical bills just hit the mailbox and the project is stalled. I need to buy a couple of drum mags because the next step is to fit the mag(s) to the magwell, before fitting the magwell to the receiver. Unfortunately that aint gonna happen for awhile, unless somebody has some extras they are willing to let go real cheap. Dangit!!!!
Sorry to hear that. Can the rifle use Suomi M31 36rd 9mm stick mags? Centerfire has them for $16 each.
Suomi M31 36rd 9mm Mag
chris, i finally got together with my buddy and got you that spare beater trunnion i'll mail it out today or first thing in the morning
edit: dang that thing's itching for a galil stock lol you know turbo has the trunnions he made for an akm that take galil stocks :) they're great i bought a couple but had him narrow them down for 1.5mm receivers
Thanks Johnny. Yeah you can set it up for both drums and sticks, but it's easier to go drum only. CFS has them for $24.99.
Thanks Justin. Yeah it would be great to have a Galil trunnion/folder on there.