My Savage 10 FCP McMillan
has a new top end on it. It’s the ATN PS-40
. After decades of professional gunstuff employment, I’m a bit jaded, and not too many items excite me extraordinarily. This unit definitely does. It’s the big brother of the excellent ATN PS-22
, with a larger objective lens and commensurate performance. I have to return it, but I’ll get a chance this year to beat the heck out of it in the field, and a tentative hunting trip is already planned for song dogs and night time testing. OpticsPlanet.com
will be offering them soon.
Use your standard rifle with daytime optics and install the PS-40
) in front of the scope, and viola, you have a night vision device
in front of your favorite familiar riflescope
platform without change of point of impact
. Clipping this excellent night vision device
onto your scope takes under a minute. If you have a long enough pic rail
, you can simply attach the night vision device
directly on it. The power and performance of this unit can only be seen in fictional movies. It is the real deal, though, and the brightness of the picture is indescribable without seeing it in real life. AND, you get to use it through your regular daytime scope. In this case, it was a Leupold Mark 4 3.5-10×40 with illuminated reticle
. Yes, you can still use the illumination in your scope, since the reticle brightness is not enhanced tens of thousands of times by the night vision device like it would be if the night vision device
was in back of the scope (or red dot sight
) instead of the front. The Leupold Mark IV riflescopes
I used a mount made to mimic the Larue S.T.O.M.P.
mount, but is much less expensive, although certainly comparable. It is made by ATN
expressly for the PS-40 night vision device
, and ATN
calls it the BAM
. I thought it may stand for “Bad Ass Mother….”, but the acronym is for the somewhat boring “Boresight Attachment Mount
“. Nevertheless, it is an excellent product in most every way. The 1/2 inch attachment nuts should be captive so they don’t get lost, for instance, and if I owned one, I would peen the bolts so they could not be removed. Easily done.
I removed my Leupold Mark IV two piece bases
that I love, and installed one of the new EGW (Evolution Gun Works)
one piece HD mounts
that we will be offering soon.
The Mark IV bases
are a standard that other bases are measured by, and I prefer two piece mounts mostly because it’s easier to load the gun from the top with frozen, gloved fingers. In this case, the gun was magazine fed and could not be singly loaded anyway, so it was a moot point. Mainly, though, I needed a longer one piece base because the recoil lugs on the BAM mount
were spaced more closely apart than what the recoil groove spacing on the two piece Mark IV
bases gave me. This new offering from EGW
, one of my favorite quality companies, is made of good steel, and has perfect picatinny
specs. Any other type than true picatinny
is just pretend, and can cause issues when swapping scopes between firearm platforms. As a matter of fact, although Mark IV bases
are true pic spec, it matters what orientation the two piece bases are, at least on this Savage. What I mean is that when you have a reversible front base
, the position of the non-centered groove in that base may cause a non-picatinny spacing between it and the rear base recoil groove. Again, there may not be the same spacing between the rear groove and the front base groove when you reverse the front base, therefore the spacing error makes it NOT true picatinny. Picatinny is not just the recoil groove width (among other dimentions), but the spacing between
the recoil grooves. Anyway, the EGW HD bases
are superb, and I recommend them highly, although I wish the Torx screws were number 15 in size rather than number 10. Yeah, I know I’m really anal.
Attach the PS-40
to the underside of the top piece of the ATN BAM mount
and leave it. When you need to install it, tighten the two 1/2 inch bolts onto the cantilevered top part of the base and you’re done. I always use my Leupold 65 inch pound torque wrench
with a Thorsen 1/2″ deep well socket for these occasions. I can’t live without this tool any more, although the wrench is mostly needed to ensure return to zero as close as possible by tightening the same amount every time, rather than just a secure assembly. Worst case scenario, if you need to, just use a box or adjustable wrench or your Leatherman tool
(aaaaarrrrrrrggghhhhh) and don’t cry about it. Just get it tight without twisting the things off.
More about the ATN PS-40
and the BAM mount