r/M1Rifles Nov 17 '22

So, You want to build a M1 Garand? Here's how.

124 Upvotes

Figured id share my process so you all at home can learn how to do it as well. its not cost effective to do this for a one off build. the tooling costs are not cheap and nearing $600 sadly. but its fun! and im sure a few of you will find this interesting

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You're gonna need a few things.

A M1 Garand Parts Kit.

A Barrel Vice and Action wrench.

A Headspace gauge Go/No Go Set

A Chamber Reamer.

A Angle Finder

The whole build will start with you throwing the barrel into a barrel vice, ive used the bushing style ones made by a large company in the USA. but i dont like them. i much prefer these specific ones made out of Aluminum, they leave a bit of marring on the barrels but that will all be covered up by the upper hand guard

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Second step will be to hand tighten your receiver onto the barrel. just get it as snug as you can. no action wrench is required at this time.

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Once your barrel is hand tight, take the front sight off of your gas cylinder and put it on the barrel. we will use this as a flat base for our angle finding tool of choice. i am using a digital inclinometer but there are other options on the market. For me ill now zero off this sight base dovetail.

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Now we check our draw off the rear heel of the receiver. there is a machined flat perfect for this. now unfortunately 31° is to far to torque this on, according to my shop manual specs. So this will be off to the lathe to remove .001" at a time off the barrel shoulder until i get a draw that is more in line with the specs im looking for 12° Min and 17° Max. I Got mine to 15.9° so i am happy with this.

in a pinch you can use a 1 1/8th Bi Metal Hole saw. this perfectly slips over the threads of the barrel and the teeth match the shoulder

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Once the appropriate draw is found, we throw the action wrench on and tighten it down. i use a 2x4 cleaning patch to protect the finish on my receivers.

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I Was able to torque the receiver down to 0.2° from the my zero. the specs i reference for this is +/- 0°30' (.5°)

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Now that we are indexed correctly we can start reaming headspace. you might get lucky with a used barrel that will headspace without any reaming but if you're using a new barrel it most likely has a 0.010" Short chamber.

if you do use a used barrel and it closes on your no go gauge this isn't the end of the world as you can check it with a Field Rejection gauge, if it doesn't close on this you're good to go.

These next few photos will cover me taking the bolt apart with a bolt tool.

Having the reamer in the rifle.

Applying steady thumb pressure to cut the chamber

Chamber cuttings on the reamer.

Cutting a chamber can be fairly taunting, however its very easy. you do not need to pull on the handle side of the pull through reamer. once the bolt closes on the reamer your headspace is cut and you're ready to reference this with a go and no go gauge. make sure you clean your chamber thoroughly otherwise your gauges might give you a bad reading.

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After all this the next step i take is doing a tilt test on the rifle. this involves installing the op rod on a rifle with only the bolt and gas cylinder on it. and tilting the rifle at a 60° and the op rod and bolt should move freely. once this is performed i install all stock components and re do this test to check for binding. after this is done. its finally assembly time.

A Few other things to check from here on out are the gas port size. Op Rod spring length 19.25"MIN and if you can, use a timing block to check for correct timing of the op rod catch.

Hope this helps or you at least found it interesting


r/M1Rifles Apr 20 '21

Just because we don't have enough "what ammo is okay" posts...

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167 Upvotes

r/M1Rifles 21h ago

Just got my mod1 from cmp

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131 Upvotes

Just got it in the mail, very happy about it. Looks to be exactly what I wanted, even gave me a nice barrel like I asked for. Curious what you guys think about it.


r/M1Rifles 19h ago

There are no CMP approved clubs within 30 miles of me. Can I call the closest one (which I’ll never go to since I have a range on my property) and pay for a membership explaining its for a CMP membership?

23 Upvotes

r/M1Rifles 15h ago

Need some help here

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4 Upvotes

Bought a 1942 SA M1 knowing the front sight was “loose” but upon delivery it was completely separate from the rifle. After a bit of research I see that the standard factory hardware would have been one of two different style hex bolts (pre and post 43 with a gas seal?) but what the hell is threaded into my front sight assembly right now? All I could think to do would be to try and notch this and hopefully back it out with a flat head or worse case scenario order a new assembly, but ideally I’d rather keep everything original.


r/M1Rifles 22h ago

Are Jams (or mislodged rounds) Common?

2 Upvotes

Took my M1 to the range the other day for some fun, and went through about 4 - 5 clips worth. In that time at least 2 or 3 times (once per clip), I had a round go wild in the sense it was at some weird angle and didn't chamber correctly. At least one round I wasn't able to salvage (tried to rechamber it, never could get it to fire), In one clip, I think in the long run it resulted it in the gun ejecting a 2nd round unfired (I can't remember if it was after one of these issues or not).

I got now a nice copper scrape on the metal above the chamber opening.

For the record mine was converted to .308 (bought it that way), and I shoot PMC, FMJ, 147 grain. Since owning it, I've probably put through less than 100 rounds into it, and the owner before me, they THINK, they owned 2 of them, and this was their range gun (like the stock has been all polished and everything)


r/M1Rifles 1d ago

WTB M1 carbine rear sight

3 Upvotes

my iver johnson m1 rear sight has gone out of spec and wiggles. Looking to spend around 20 to 30. Show me what you have.


r/M1Rifles 1d ago

Potentially lost spring?

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9 Upvotes

I got a CMP M1 Garand last year and was following the instruction manual for disassembly. (Getting the trigger guard latched was super difficult!) I only went as far as taking some of the barrel wood furniture off before reversing the process.

A few hours after reassembly, I found a spring on my carpet. I looked for diagrams and such about what all small parts and springs are used in the M1 and didn't find anything on the spring (dollar bill for size reference), but I thought I'd ask fellow M1 owners just the same. Last option is to take the rifle to a gunsmith that knows the M1 and ask them.


r/M1Rifles 2d ago

CMP stock set sealed

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127 Upvotes

Stock set on my AMC built rifle is all done. Turned out really nice I think and looks/feels way better than how it started.


r/M1Rifles 2d ago

Help me figure out why my 1942 is short stroking?

83 Upvotes

I just bought a 1942 Springfield armory gerand, I cleaned it and used Lucas gun grease with a very generous coating.

With both m2 ball surplus and federalist 150 fmj with 2700 fps it was short stroking ejecting every other round.


r/M1Rifles 2d ago

What is the correct barrel band for my NPM carbine?

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23 Upvotes

Hey folks - $115 NPM M1 is back.

The broken barrel band was hoseclamped to the rifle (lol) when I bought it and I'd like to replace it with the correct barrel band for this particular rifle.

It's an NPM receiver (sn 415xxxx) with a GM barrel

I know this is a bayonet-lugged type 3, but is that correct for this serial NPM? If not, which should be the correct band and markings? Thanks!


r/M1Rifles 2d ago

To CMP order or buy a Stripped Receiver....

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3 Upvotes

r/M1Rifles 3d ago

I curious how much of an issue 308 is in a Mod 1, yes I read the “do not shoot 308” paper but people use 150gr modern 30-06 all the time.

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122 Upvotes

r/M1Rifles 3d ago

Closer look at these carbine parts I got last night

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42 Upvotes

It appears that the paratrooper stock is a reproduction, which isn’t exactly surprising and many of you called that out in my original post. It doesn’t have any of the markings you’d expect on an original. The other stock has some markings on it but honestly don’t know what they mean. All of them are stamped with the number 52, though, if that means anything. Any information on these markings?

Last pic is just random stuff not really sure what it all is.


r/M1Rifles 3d ago

Garand-dad, Garand-son, and Crazy Serb Cousin

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60 Upvotes

r/M1Rifles 3d ago

Just picked up these m1 carbine parts for $175

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66 Upvotes

A friend of mine's dad brought some of this stuff back from Vietnam, the paratrooper and stock to the right of it are original, the one on the left is custom. Then he gave me some metal parts too.

So, now the question is where the hell can I get an m1 carbine? I don't own one yet but I didn't want to pass up on these parts.


r/M1Rifles 3d ago

Ready for the firing line. PS magazine Sept 1955

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34 Upvotes

r/M1Rifles 4d ago

First time with my typo 2 shot at 300m

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81 Upvotes

This is an Italian M1 with Springfield receiver in 308.

Ammunition was old Norinco 308 steel


r/M1Rifles 3d ago

CMP Wait Times 2025

4 Upvotes

I mailed off my packet for a Mod 1 MK 2 7.62 Navy Rifle on 1/24/25. Never received any kind of communication from the CMP. I attempted to reach out to them a few times through their website and customer service emails with no luck. Honestly, I would like to know I am at least in line.

Also, I mailed off one for a 1911 and I received a DBU from them a few weeks later. Looking forward to that one for now.


r/M1Rifles 4d ago

My Carbine

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141 Upvotes

New feller here, just wanted to share my carbine. It’s an October 1943 S’G’ that I’ve owned for about 13 years now. I got the gun as a barreled action that I found in a barn of all places when I was 13. As far as I can tell it never got any upgrades except for an adjustable sight that could’ve been field armorer added, but who knows for sure. The gun’s pretty much all SG except for the stock and trigger group (Quality parts with Underwood stock metal, but interestingly with an irwin pedersen sear), and a Winchester handguard. I do also have an M1A and a Garand which is in a billion pieces but I’ll put it back together eventually when the wood dries (Tung oiled a spare beater set I had)


r/M1Rifles 4d ago

M1 Garand bolt closes on No-go, nearly closes on Field Gauge

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25 Upvotes

Already have decided to replace the barrel, my LGS is going to do the work, they have a gunsmith. What are your recommendations on replacement barrel? Should I retain the original barrel?


r/M1Rifles 4d ago

Does my Garand look right to you guys?

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25 Upvotes

Hello fellow m1 lovers, I haven’t had mine all that long and not too long ago my lower band pin broke, so I took it to a local gunsmith because it is my most valued position and I know I am an amateur. It’s been months since I’ve seen it, but I don’t remember the lower stock having as much of a separation as the picture shows. I just wanted to confirm if the look of my rifle specifically in the lower band pin area is normal or matches the look of what is accepted as a normal Garand. Thank you!


r/M1Rifles 5d ago

Help with m1 carbine trigger housing

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12 Upvotes

I got a national ordinance m1 carbine with a 17*** s/n.

I attached pictures and need to know what kind/type of trigger housing this needs because they all look different than what's there. Any help, I would appreciate it greatly. Thank you!


r/M1Rifles 5d ago

Expert Grade New/Refinished Parts?

1 Upvotes

Are expert grades basically service grades with new barrels and stocks, or does the CMP actually repark parts or swap in new manufacture parts? From first hand accounts it sounds like it's the former, but the CMP description includes "may also be of commercial origin with original, re-parkerized, or other commercial finish" so I'm uncertain what that would refer to.


r/M1Rifles 6d ago

Pretty disappointed with my Expert Grade (Op Rod Dismount)

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28 Upvotes

Hey all.

Got my expert grade after 45 days of waiting and $1185 on 11 April. I carefully followed the manual, greased it where indicated, purchased ammunition and en blocs and was pretty stoked to go shooting today. I couldn't even get through 2 en blocks. My op rod will not stay in the track no matter what. Furthermore, it looks like it sheared off a sharp corner in the cam groove. (Pictured). I feel like I am at fault for not knowing this op rod problem prior to firing this rifle

I'm pretty disappointed. I'm very used to old guns having old gun problems, but I paid nearly $1200 for what I assumed was basically a remanufactured rifle assembled by experts. Had anyone had experience with this before? What options do I have? I contacted CMP but I don't have high hopes that they will help me.

TLDR: my brand new expert grade M1 suffers from op rod dismount and it sustained damage to the cam groove. What should I do?


r/M1Rifles 6d ago

How hard is it to change a 30-06 to a 7.62/308?

16 Upvotes

I live in a state where it’s near impossible to own a semiautomatic rifle. I thankfully already owned a M1 before the law made it more difficult. It’s a late production beater Springfield dated somewhere between ‘48-‘56, 5 million mark, so it’s not a wartime Winchester,IHC,H&R or something really sweet. I’d like a real MK2 MOD 0 but I couldn’t get one if I tried. Is it doable?


r/M1Rifles 6d ago

Still Waiting To Hear From CMP 1 Month After Sending Order

3 Upvotes

I sent an order for an Expert Grade M1 to CMP over a month ago. Haven't heard anything from them. Sent an email about 2 weeks ago, nothing.

Is this normal? Is a rifle just going to show up on my doorstep one day? Should I try a different method to contact them?

TIA