2nd Bat
Master sergeant
Posts: 11,813
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Post by 2nd Bat on Nov 24, 2016 17:24:20 GMT -5
The lock metal parts eat their young from the blowback action is the most common of a MYRIAD of potential problems. Screws throughout also tend to quickly loosen from even casual use but these are adequately held in place with picture. (Assuming you can find and access all of them). With the marketplace now offering 3 AEG M1 Garands we now have several skirmishable M1 Garands to choose from. They don't feature the cool top loading, ejecting enblock or blow back action but they work, consistently, durably and powerfully. The new A&K is so new reliability hasn't been established but the ICS with a few exceptions has proven to be an excellent, reliable shooter. The GnG is the truest as a replica and the A&K is the least expensive.
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Post by redvonhammer on Dec 3, 2016 18:01:56 GMT -5
45 breaks at the "knob" that goes into the slide, this is because the bolt wants to go further back than the slide, just terrible pot metal and bad bolt-slide timing incorporated into the design. HFC 134a is what is recommended, Green gas will kill it, Abbey Predator is in between those two and actually doesnt break it. I had mine break the second I used a gas that was between Abbey Predator and Green Gas. Ordered a new 45 from Wolf Armory, still works with Abbey Predator, but now I`m contemplating to just cast my own in aluminium, file out the rough edges, drill and thread what needs to be drilled and threaded, and install, then put the thing through its paces with cheaper gas. Next part that breaks I`ll solder it together and cast a new one as well, till I`ve worked them all out, so to speak.
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Post by CPL. Mills 2nd Rangers on Apr 3, 2017 20:28:28 GMT -5
The Marushin M1 Garand almost has to be treated like a real gun in terms of maintenance. Every time I use mine I have to check all the screws to make sure they are secure, I have to oil it before I use it each time. I put silicon oil where there are moving parts. Turning down the hop-up before I store it.
The Japanese can't have real guns so they made these ones as real as they could and real guns require maintenance.
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2nd Bat
Master sergeant
Posts: 11,813
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Post by 2nd Bat on Apr 3, 2017 23:09:15 GMT -5
The Marushin Garand requires WAY more attention than ANY real gun by a lot. It requires close scrutiny literally every 200 rounds. With that said it is absolutely the most ambitious effort in attempting to replicate an M1. I see where a Marushin M1 is up for auction on EBAY. It will be interesting to see what it brings. It's currently under $120.00. Gotta believe it will go over $300.00 as they are getting rarer and rarer especially working ones.
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Post by brownien on Apr 6, 2017 9:32:39 GMT -5
I remember buying my working SI model Garand for $350 and selling it for $550 easily 6 months later. Even that seems really cheap to me for a working model nowadays!
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2nd Bat
Master sergeant
Posts: 11,813
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Post by 2nd Bat on Apr 6, 2017 15:33:36 GMT -5
I suspect as much as I loathed the two I had, a functioning, well cared for Marushin M1 might end up being a worthwhile collectible.
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Post by warbirdguy1 on Dec 6, 2020 10:03:46 GMT -5
Around 2016 my Part #45 failed at ~100 rounds. I am in the process of working with a company to produce a new manufactured part #45. We will be testing the prototype part this week and make revisions based on our findings. I HOPE by early 2021 I will have a readily available replacement part on my eBay.
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2nd Bat
Master sergeant
Posts: 11,813
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Post by 2nd Bat on Dec 6, 2020 18:31:10 GMT -5
Its shocking that no one thus far has made such a part readily available but unless its aluminum or lightweight hardened steel it won't work as well as it needs to. Good luck with the process and on behalf of all those Marushin Garand owners out there I hope it works out. Both of mine ended up as non functioning prop weapons years ago.
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Post by warbirdguy1 on Dec 6, 2020 22:58:39 GMT -5
Here is the prototype made of an incredibly expensive resin that has been used to build several replacement parts for industrial equipment. I have taken some of my samples and smacked around with a claw hammer and leveraging with my hands. Only broke it after multiple excessive full force claw hammer blows. I plan on running three prototype Part 45 for several hundred rounds to see if they are worth producing in a large quantity and selling
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2nd Bat
Master sergeant
Posts: 11,813
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Post by 2nd Bat on Dec 7, 2020 14:31:43 GMT -5
The rear site looks like an excellent replacement sight for the various M1 carbine that have post war sights. GBBs and the little sprinters have the wrong sight as you no doubt know. I hope these 3D printed parts work out.
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Post by warbirdguy1 on Nov 11, 2021 20:48:54 GMT -5
It has been MONTHS but I have made some promising progress.
So a direct part #45 replacement in this medium, some engineering resin for resin 3D printers, did hold up for a few shots before breaking at the infamous point as expected.
I am working on a new design that will replace both part #45, the rotating bolt, and screw that would hold the bolt in.
This part so far is a solid piece to add a great deal of strength.
As done on the previous test a 3mm steel rod will reinforce the spine of the part 45 area.
It may take months before the next part is done but I will keep everyone posted.
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