[Fenrir17]

Team,

I am in the process of picking an optical site for my BM-ACR.
It will be my primary optic, with BUIS sites from Diamondhead USA when they arrive.

I am Left Handed and I have moved the charging handle to the right side of my rifle.

I would like to know if anyone has an AimPoint M4S and can let me know if I will have charging handle manipulation clearance issues.
I will go with the M4 and battery tube on top if it will prevent some "Knuckle Busting" and or any other issues when operating the charging handle. I would like to preserve as much field of view without sacrificing rifle handling speed and accuracy, by selecting the 4S which keeps the battery tube just bellow and out of line of sight.

I will most likely be going with an aftermarket throw lever mount from G&G or Larue Tactical for a trimmer lock down. The Aimpoint provided quick detach mount has a large Knob that sticks out a little proud from the mount. To me it looks like it would present another "Snag Point" when rifle is slung for transport.

Your thoughts, experience and opinions welcome ,

I have read other forum threads that others have had issues with various mounting problems with the 4S version and the battery tube not cooperating nicely with other mounts in proximity to the 4S when mounting 3x multiplier etc...


Fenrir17

 

[kjsl105]

I am familiar with the protuding mount handle in question. It is great for it's intended purpose but really doesn't need to hang out that far past the reciever.

+1 for the Larue.
Haven't tried the GG&G but they make very high quality mounts too.

As for the battery tube, best bet would be to mount a magnifier and fit each option to see which you prefer. This would obviously require a shop who carried all the options, or a friend with a good loadout.

 

[ACRFan]

You do not need to locate the optic that far forward to interfere with the charging handle. I think you would be fine. But I am curious as to why you are choosing the CompM4. I am an Aimpoint guy myself and I would chose the T-1 over the M4 any day of the week and twice on Sunday without even thinking. I get just as much performance out of the T-1 without all the added weight. The T-1 costs about a $100 less than the M4 both of a Larue Mount.

In my experience the argument for the M4 having 80,000 hours (9 years) of battery life when the T1 has a mere 50,000 hours (5.7 years) is not a valid argument in my opinion. I know some people are thinking about a zombie apocalypse and what have you, but if you are still concerned about finding a battery for your optic ofter 5 - 9 years, you have bigger issues to worry about and you better start getting good with those backup sights cause the situation is a lot worse than you planned for.

Or you could just not leave your optic running when not in use. Then you would never have to worry about replacing the battery... ever...!

You should really consider the T1

 

[BoovarBjarki]

I second what ACRFan said, save the weight and get a T1.
The shelf life of the T1 battery is 10 years and they are not expensive batteries.
Trijicon RMR would be another option giving you 15 years of dot in a light package.
By then you will probably end up upgrading the whole optic for something superior.

 

[Fenrir17]

T1 - Is definetly under consideration.

I agree the T1 looks to be a really nice optic. It is amazing what they are able to produce in such a small form factor. I do look forward to finding one to take a look at.

I was considering the M4s as I am familiar with the Full size Comp M that I still have on an AR 15 Bushmaster. And it appears to be quite well received by active duty users.

I am also interested in the Leupold Prismatic 1x14mm Tactical - With illuminated Circle /Plex.
Though it is not a Paralex free red dot like the Aimpoint's, the focusable rear lens is quite interesting. I do wear glasses and the ability to fine tune the focus is truly interesting as well as the etched reticle being clear and available during daylight regardless if you have it illuminated etc....

Does anyone have any experience with the Leupold Prismatic Tactical 1x14mm ?

To my original question - If I went with an Aimpoint and I positioned it leaving enough room for a 3x magnifier behind it. Would the M4s be positioned forward enough to sit over the charging handle path on the right side ?
I was curious if the battery module being low slung on the M4s device might get in the way of my hand while operating the charging handle, moved to that side being left handed.

Not having access to one to investigate. I thought others might be able to check.

I am also looking at the Leupold Mark4 CQ/T as well as others. All CQB sites optimized for 0-300 yards are in the running. ( Good glass costs good money ! - Within reason )
You do get what you pay for.
But I am trying to keep this under $1000 for the primary site. A 3x multiplier may be on the table if the 6.8spc option ever comes out.

I am taking my time to build this ACR to suit and fit me.

Thank you for your attention,

Fenrir17

 

[ACRFan]

To my original question - If I went with an Aimpoint and I positioned it leaving enough room for a 3x magnifier behind it. Would the M4s be positioned forward enough to sit over the charging handle path on the right side ?
I was curious if the battery module being low slung on the M4s device might get in the way of my hand while operating the charging handle, moved to that side being left handed.

You will be fine.

 

[Fenrir17]

Many Thanks !

 

[johnny smithsonian]

...i have an m4s with a 3xmagnifier and i have no problems..i mount it right before the charging handle "window" begins...with a larue mount the m4s is about as far forward as you could want it...even if you mounted it right on top of the charging handle it wouldn't cause you any trouble that i can see...larue stopped making the medium 3xmagnifier mount...so make sure you buy the m4s mount compatible with what you need in the future...i have a (medium)NV and a (tall)3x compatible mount for my m4s...so i can use both... i didnt like the m4s mount that came in the box, because no matter how many times i clicked the knob to secure it to the rail it would loosen up and change my zero...a pain when shooting 6.8spc...POW!....click..click...POW!POW!.....$3....$5....$10....and so on...hahhaaha

 

[Fenrir17]

Johnny Smithsonian,

Thank you very much. You have corroborated what others have said. And your advice on mounts is greatly appreciated. My thanks to all who took the time to respond.
I hope to be able to contribute to the knowledge base as well in the near future. ( I just ordered a Battle Comp 1.5 for my State Compliant barrel ) I intend to replace the factory " Izzy Brake " before I take the first shot with this new build out. The next task is to find a skilled Gunsmith in my area to facilitate the muzzle brake change.

Thanks to all again,

Fenrir17