Re: M40 Build Guide
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Gutowsky</div><div class="ubbcode-body">O.K., So we know (think?) that there are at least three different types of Clip-Slots found on Remington 700’s:
1. One, as shown on the Remington Drawing, referencing the M40-700 clip-slot. This one is very
intricate and removes the front screw hole on the rear receiver bridge. Referenced as M40.
As shown on Page 194 of Death From Afar (this thread, posted by Mike)
<span style="font-weight: bold">Never ever seen a "clip slotted" 700 that had went back far enough to remove the front screw hole on rear bridge. That is the hole the Redfield 40X marked base uses on the 700/M40. The machineing to accomadate the Unertl/USO mount is very specific in order for a tight fit. Mount was made to precisely fit/function with this type to add strength </span>
2. Another: Showing retaining of both screw holes on the rear receiver bridge and being of a
simpler design. (pictures posted by Xarmor on 09/14, above). Commercial 700’s (?)
(Could be before or after M40-700 Corps receivers?)
<span style="font-weight: bold">IIRC there was a pic posted by someone in the M40A1 thread of a simple 'clip slot' machined into the factory rectangle cutout to allow stripper clip or adaptor on the receivers with the rectangle cutout?? However it was NOT a true clip slot and couldn't be cleaned up with the 'correct' "clip slot" IIRC??? </span>
3. And a simple rectangular slot found on a M40A1’s Build. (Posted by a guy in France on
the M40A1 Build thread.) (maybe just “The French Way”?)
<span style="font-weight: bold"> Must be the "French Gay Way"....The rectangle slot was machined into all 721/722 and early 700's, long and short to mid 2XX,XXX receivers. Every 4 digit, 5 digit and early 6 digit I have owned/seen has/had the rectangle cutout. I currently have a 236XXX receiver(barrel date code 9/66) laying here that does not have this cut so it was discontinued sometime between the 221,XXXish receivers and the 236,XXX, when, I don't know. Also note that this 'rectangle cutout' does not have the front receiver ring machined for bullet tip clearance that a 'true' clip slot utilizes!!! </span>
Thus: To be correct "to spec.", The “Remington Style #1 Clip Slot” should be for the M40’s.
Then: Since the Corps M40’s were rebuilt into A1’s why the second screw hole in the rear scope base mount on the Unertl mounts for the 10X scopes if there was only one screw hole?
Were additional later style receivers used to build the M40A1’s other than just the M40-700 receivers?
<span style="font-weight: bold">Some(there are a few "genuine" M700/40's around so I say "some") of the more serviceable existing M40 receivers were tore down and rebuilt into the M40A1 weapons. Also the Corp puchased roughly 100 C prefix receivers for other builds in the later 80,s?, also some G prefix. George from GAP IIRC posted somewhere that there were more G prefix than others do to rebuilds, loss, plain wore out or destroyed etc??? </span>
My personal preference would be the one being a simple rectangular “cut out” having the two rear base mounting screws, as this would be more secure. (Also, less expensive to do!)
Now, I can only wonder which one GAP will add to our rifle. Must call today!
<span style="font-weight: bold">George will do the one 'correct clip slot' that utilizes the same dimensions as the early Unertl and later USO mounts, no variance's as these mounts were USMC specific. GAP will machine rear bridge correctly and front receiver ring as the "correct mount" utilizes that front divet for strength </span>
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If you search the net long enough and ask enough people's opinions you will get numerous answers of which some are incorrect or at least partially incorrect. THERE IS ONLY ONE CORRECT CLIP SLOT. As for some 'commercial' receivers being "clip slotted" who knows where/how/when that happened. Could have been done by a smith at one time for a specific customer/use. Could have been sent back to Remington Custom Shop. While I have read some mention they owned a "clip slotted" 700 I have never seen one personally. Seems someone here posted a pic once but it was different with very basic cuts and would not accept a Unertl/USO mount, cannot remember who though! Have read numerous posts on the net referring to the early factory rear bridge cutout as a "clip slot" but it is not at least in the sense of the USMC/Unertl/USO combo.
Did Remington do the first ones on the R700/M40??? Not positive but I would put my money on it. Reason at that time for "clip slotting" the M700/40? Don't know, other than the 40-XB repeater was machined as such! Were later C, G etc prefixed receivers machined by Corp or Remington? Don't know that either.
Now I will let the "clip slot" comments and conversations rest as IMO it has been overspeculated on. Unless there is proof from Remington or the Corp of something different that Senich or George @ GAP have posted/stated we are all only 'guessing', 'assuming', and making a big deal of something that I don't believe is!!!!
Not trying to be a smartass, just trying to make this subject a bit simpler and less 'complex'!!
Respectfully,
Dennis
