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Army M24 Build Thread

I wondered that as well when I saw it. I think it’s an RFID tag. The marine corps rejected using them over concerns it could be used as passive tracking of troop movements.
 
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USMC rifle M40 no. 6257227 is documented by Peter Senich in his book The One-Round War on pg. 259. It was shipped to Sionics Inc. in December 1969, and is pictured with a threaded bbl & Sionics Model M14SS-1 suppressor.

The CMP auction rifle currently being discussed is no. 6257272. It has a short-action HS Precision M24 stock.


cmpauction.thecmp.org/detail.asp?id=8509&n=Remington-Model-700-Serial-Number-6257272

This may have been a Trophy Match award rifle presented to a member of the USMC rifle team circa 1981 (Senich pg. 262) but unsure how it wound up in the CMP auction.


Interesting batch of serial #'s. These are $30k+ rigs
 

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Left bolt is Remington Defense M24
Right bolt is EuroOptic ASA M24

What is the reason Remington widened the EuroOptic lug rail channel?

What is the reason Remington used a smaller diameter & non-chamfered gas escape port on the EuroOptic bolt?

Both receiver gas ports are the same diameter
 

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The factory OM describes how to install the mag follower spring after identifying the longer leg by compressing it. But it does not mention the tactile dimple stamped onto that leg.
 

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There is also a difference between the floorplates of the 2 contractors who built them. The 2-piece bottom metal variant has an elongated floorplate spring channel on the EuroOptic ASA M24 on the right side picture below. This allows the spring to seat farther forward. Not sure if that was the intended purpose. I cant feel any difference in pressure between the two. Both are still a bitch to load
 

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During the later stages of rhe Vietnam War, USAMTU as part of a product improvement series, rifles were acquired from various branches of the Services and from Sionics Suppressor. AMTU also acquired a small number of 7 digit actions, obviously if this action was formerly used by the USMC as a M40, well price would be pretty substantial, some of the other 7 digit actions I have seen sold ranged from 4 to 8.
 
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Not sure if this is the place to post something like this but I am trying to identify two parts on this rifle. First the stock and secondly the bridge. I have a Remington 700 SPS Tactical Heavy barrel 308 that I would like to rig out similar to this rifle. Any help would be appreciated.
 

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That auction was a sleeper. It has 2 UID trackers, and the weird RFID tracker. And the HS Precision stock has early issue annodized aluminum plates, not blackened. Maybe a Quantico benchmade predecessor to the M40A3...call it an XM40A2 prototype, or even a stop-gap M40A1 rebuild when McMillan HTG stocks weren't available?
 
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That auction was a sleeper. It has 2 UID trackers, and the weird RFID tracker. And the HS Precision stock has early issue annodized aluminum plates, not blackened. Maybe a Quantico benchmade predecessor to the M40A3...call it an XM40A2 prototype, or even a stop-gap M40A1 rebuild when McMillan HTG stocks weren't available?
And I was hoping it would go cheap…………
 
IDF 933 Nahal Brigade M24 in service
 

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