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The Building of an XM25 and it Parts

This is a discussion on The Building of an XM25 and it Parts within the The M14 forums, part of the M14 M1A Forum category; Originally Posted by M14E2 Not exactly a Picatinny rail on that mount , eh? I can't tell if you are serious or joking? Ren...


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Old November 20th, 2015, 10:23 AM   #106
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Quote:
Originally Posted by M14E2 View Post
Not exactly a Picatinny rail on that mount , eh?
I can't tell if you are serious or joking?

Ren

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Old November 20th, 2015, 10:24 AM   #107
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Quote:
Originally Posted by M14E2 View Post
Not exactly a Picatinny rail on that mount , eh?
It's easy to forget that the M1913 Picatinny rail was not standardized until the mid 1990's. Before then the two most common mounting systems were Weaver rail and NATO STANAG with the two lugs, like you see on HK's.

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Old November 20th, 2015, 10:26 AM   #108
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Quote:
Originally Posted by Renisin View Post
I can't tell if you are serious or joking?

Ren
I'm referring to the spacing of the cross slots. The Picatinny 1913 specs call for equal spacing of the slots as well as width/depth. My Armscorp copy of that mount has the same slot spacing.


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Old November 20th, 2015, 10:29 AM   #109
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Quote:
Originally Posted by 2336USMC View Post
It's easy to forget that the M1913 Picatinny rail was not standardized until the mid 1990's. Before then the two most common mounting systems were Weaver rail and NATO STANAG with the two lugs, like you see on HK's.

Kinda what I meant.

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Old November 20th, 2015, 10:34 AM   #110
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There wasn't really a standard for slot spacing on Weaver-style mounts, but what I have seen most commonly on systems intended for military use is slots spaced at 4.25". Some mounts will have several sets of slots, each spaced 4.25" apart, so that you can move the rings 1/2" forward or backward for eye relief. And some have a few other slots at other spacing for unusual applications. I think that's what you are seeing on the Brookfield.

Ren if you measure (or care) I bet you'll find several pairs of slots that are 4.25" apart...


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Old November 20th, 2015, 10:55 AM   #111
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The Brookfield mount has the weaver style spacing. I imagine that other rings will work but the one called for are the weaver rings, in this case badger.

Ren

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Old November 20th, 2015, 11:02 AM   #112
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I said this:

Quote:
Originally Posted by 2336USMC View Post
It's easy to forget that the M1913 Picatinny rail was not standardized until the mid 1990's. Before then the two most common mounting systems were Weaver rail and NATO STANAG with the two lugs, like you see on HK's.
which isn't really true because I left out the M16 carry handle V groove which was very common, because it had been the US service rifle for 30 years already when Picatinny was adopted...

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Old November 20th, 2015, 11:53 AM   #113
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Quote:
Originally Posted by Renisin View Post
The Brookfield mount has the weaver style spacing. I imagine that other rings will work but the one called for are the weaver rings, in this case badger.

Ren
Yeah , from what I understand , Picatinny rings will fit Weaver slots , but Weaver rings might not fit Picatinny slots. The Weaver slots are generally deeper and wider so zero won't be repeated after removal & remounting.

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Old November 23rd, 2015, 09:02 AM   #114
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Originally Posted by Renisin View Post
I think the list below has now been established to be correct for my XM25 build, which Jon Wolf and co. will be doing.

1. McMillan Second Gen Marine Corps Stock.................................... Nice
2. Gene Barnett Barrel Med. Weight 4 Groove w/modified gas cylinder New
3. BPT Stock Liner/installation tool New
4. BPT Scope Mount New
5. BPT Op-Rod Spring guide New
6. BPT Gas Piston rev.1 New

Winchester parts.
7. Trigger housing 66118 New
8. Hammer 66118 original finish Excellent
9. Trigger&Sear new from wrap New
10. Bolt 66118 original finish New
11. Op-Rod 66118 original finish Excellent

Sights.
12. USGI NM rear sight base stamped in Ink NM/2A New
13. Elevation Pinion WCE appears to be New
14. Windage Knob L.P.R. NM New
15. NM aperture non-hooded New
16. USGI NM Front Sight .062 New

Other known parts
17. H&R Op-rod Spring New
18. SA. Gas Cylinder Lock New
19. KMTco. Butt Plate ASSY. New

20. NM Flash Suppressor USGI New
21. Bausch & Lomb Tactical 10x
22. Badger Rings
23. GunWorks of LA. receiver #XM25

All others part while not identifiable to any one particular manufacturer are USGI in Excellent to New condition.

I was able with the help of my good friend Majikani to locate an original Bausch & Lomb Tactical 10X and Badger rings. I also went with the GunWorks of L.A. receiver serial#XM25.









Jon Wolf was chosen to do this build because of the great recommendations he has received and because I am aware he has experience with this type M14.

All parts will keep their original finish with the exception of the receiver,bolt,barrel, op-rod,trigger housing,hammer,flash hider and gas cylinder which will be Nitrided.



Ren



I believe this to be the final version. Now its a waiting game.

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Old December 16th, 2015, 08:05 PM   #115
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Never happy to leave well enough alone, I have found some very special BPTco. bits to add to this XM25 build!!

Stay tuned for coming pics, as these are quite rare parts.


REN

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Old December 17th, 2015, 07:19 AM   #116
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How did you find that scope?

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Old December 17th, 2015, 07:29 AM   #117
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Hurry up and post them.

Did you settle on a builder yet after our last talk?

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Old December 25th, 2015, 07:32 AM   #118
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How did you find that scope?
A friend of mine saw it for sale and gave me a heads up. It turns out the scope and rings were never shot, the guy is looking for the box for the scope.

I have to say I got lucky with this one!!

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Old December 27th, 2015, 04:38 AM   #119
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I have settled on a name for my XM25. The rifle will be comprised of mostly Brookfield and Winchester parts, but to be a true XM25 the Brookfield parts are the essential ingredient.

Therefore her name will be, "BrookfieldXM25" or more simply "Brook".

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Old January 2nd, 2016, 07:22 PM   #120
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This taken from, The M14 Rifle History and Development, by Lee Emerson.

Optics on the M25 varies according to unit preferences. The U. S. Army XM25 rifles were
first outfitted with Leupold & Stevens, Inc. M1 Ultra and Bausch & Lomb Tactical scopes
followed by Leupold & Stevens, Inc. M3 Ultra models. Army Special Forces M25 rifles
today typically sport the Leupold & Stevens, Inc. M3A 10X scope and Mark 4 scope rings.
U. S. Navy SEALs have employed both Bausch & Lomb Tactical and Leupold & Stevens,
Inc. 10X scopes on its M14 SSR rifles. Brookfield Precision Tool also produced an
adapter for its scope mount to accommodate the AN/PVS-4 night scope. The AN/PVS-4
second generation technology night scope was field tested in 1974 and later
manufactured for the U. S. Army in 1980 and 1981. U. S. Army 10th Special Forces
Group successfully used the XM25 fitted with AN/PVS-4 scope and Brookfield Precision
Tool scope mount and adapter during Operation Desert Storm. Generation III image
intensifier tubes were available for the AN/PVS-4 by 1999.

Does anyone have a picture of the AN/PVS-4 scope mount adapter by Brookfield Precision Tool co.?

I am looking for information on the AN/PVS-4 NV scopes, any help is appreciated.


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