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mec swap

Posted: Mon May 08, 2017 7:49 pm
by GeraldC
Is anyone using one of these for using left eye and right hand rifle ?The offset sights are too fiddly for different distances.

Re: mec swap

Posted: Tue May 09, 2017 2:32 am
by TenMetrePeter
I am also going to need one of these and would like to hear from anyone using one on a Centra Pro 57 or similar design sight base.

Re: mec swap

Posted: Tue May 09, 2017 2:16 pm
by Shooterer
I saw this style offset today for the first time. (might be old news)

https://www.euroshooting.eu/en/index.php?detail=1015

Re: mec swap

Posted: Tue May 09, 2017 6:07 pm
by TenMetrePeter
Shooterer wrote:I saw this style offset today for the first time. (might be old news)

https://www.euroshooting.eu/en/index.php?detail=1015
The MEC swap is not so affected by cant as that simple front and rear bracket offset. The MEC with its prisms looks down the normal front and rear sights. Only the iris moves to the left.

Re: mec swap

Posted: Wed May 10, 2017 5:23 am
by Tim S
TenMetrePeter wrote:The MEC swap is not so affected by cant as that simple front and rear bracket offset. The MEC with its prisms looks down the normal front and rear sights. Only the iris moves to the left.
Peter, if you're canting to get your head behind the sights, which is the usual reason to cant, periscope sights may allow you to have the gun upright.

Re: mec swap

Posted: Wed May 10, 2017 6:35 am
by Piefou
If you're competing, check if it's allowed by your rules.

In ISSF, it's not yet clear if multiple mirrors (like the swap) are allowed as part of the rear sight. The new rules allow only one "external glass system". Better ask first to the range officers.

Re: mec swap

Posted: Wed May 10, 2017 7:39 am
by Tim S
Piefou wrote:If you're competing, check if it's allowed by your rules.

In ISSF, it's not yet clear if multiple mirrors (like the swap) are allowed as part of the rear sight. The new rules allow only one "external glass system". Better ask first to the range officers.
I believe that periscope sights have been permitted previously. Besides, mirrors are not lenses.

Re: mec swap

Posted: Wed May 10, 2017 10:53 am
by TenMetrePeter
yes they are permittes Rule 7.4.1.6 allows any prism or mirror device to swap eyes so long as no magnification is provided. it must be used as intended to swap eyes eg left eye from right shoulder.

Re: mec swap

Posted: Wed May 10, 2017 11:01 am
by TenMetrePeter
Tim S wrote:
TenMetrePeter wrote:The MEC swap is not so affected by cant as that simple front and rear bracket offset. The MEC with its prisms looks down the normal front and rear sights. Only the iris moves to the left.
Peter, if you're canting to get your head behind the sights, which is the usual reason to cant, periscope sights may allow you to have the gun upright.
Possibly not in my case. This device shifts 65mm but my IPD is 67mm so 2mm extra cant may be required! But I take your point it can give a more comfortable position.

Re: mec swap

Posted: Wed May 10, 2017 6:47 pm
by Modena
A person at our club has recently started to use a MEC swap, and someone else is getting one also I believe. I haven't used it, but the feedback from those users is that you need to be DIRECTLY and perfectly straight behind the Iris or you dont get a sight picture, or something like that. So it's not like a normal setup where you can be off to one side by a fraction and still have a sight picture, granted in that case you are introducing inaccuracy, but you get the idea.

Re: mec swap

Posted: Thu May 11, 2017 1:34 am
by GeraldC
Thanks for the replies.I only realised how bad my right eye had got when testing a left hand rifle.

Re: mec swap

Posted: Thu May 11, 2017 2:37 am
by TenMetrePeter
GeraldC wrote:Thanks for the replies.I only realised how bad my right eye had got when testing a left hand rifle.
Same here. MEC Swap £230. Cararact op £2000 and it may not be the problem anyway. When the black merges into the white on the card decisions have to be made.

EDIT. Its an epiretinal membrane (cellophane eye) which is not really operable til sight is obscured completely due to risks.

Re: mec swap

Posted: Wed May 24, 2017 2:20 pm
by hipwr223
Does anyone in the US sell this item? Does it adjust width wise? Not everyone has identical eye spacing.

Re: mec swap

Posted: Wed May 24, 2017 3:12 pm
by TenMetrePeter
hipwr223 wrote:Does anyone in the US sell this item? Does it adjust width wise? Not everyone has identical eye spacing.
This UK supplier will ship to USA for £20 on top of £230 price.

http://www.intershoot.co.uk/acatalog/Si ... ement.html

Fixed at 65mm IPD. most people between 60 and 70 but there's a lot of flexibility by canting . youre only looking thru one side!

Re: mec swap

Posted: Wed May 24, 2017 10:48 pm
by Modena
hipwr223 wrote: Not everyone has identical eye spacing.
It doesn't adjust width wise and I don't think it needs to. Not everyone has the same cheek/jaw/eye geometry either, this is what your cheek piece adjustment is for. It will also cater for the eye width variation - adjust your cheekpiece to get your non-cheekpiece behind the MEC swap.

Re: mec swap

Posted: Thu May 25, 2017 6:58 am
by efoleyjr
hipwr223 wrote:Does anyone in the US sell this item? Does it adjust width wise? Not everyone has identical eye spacing.
PM sent

Ed

Re: mec swap

Posted: Tue Jun 27, 2017 6:43 pm
by hipwr223
I was fortunate to have the opportunity to buy one of these from another forum member and my first time on the range with it showed much promise. In fact I think this device is going to get me back on iron sights competitively.

Re: mec swap

Posted: Thu Jul 13, 2017 2:37 pm
by Shooterer
https://oberleenterprises.com/product/mec-swap-comfort/

On sale in Ohio

Edit:
Nothing to see here, move along.... Peter corrected me below (unless your eyes are really close together)

Re: mec swap

Posted: Thu Jul 13, 2017 4:10 pm
by TenMetrePeter
That one is to allow the rifle to be held vertically lower. the one for right to left eye swap is bigger.

Re: mec swap

Posted: Sat Jul 22, 2017 4:25 am
by 40xguy
in my opinion, these are great ! am right handed, right eye going bad (for shooting), left eye dominant, 75 years old.... am shooting with this and scores have increased substantially. it simply screws into your rear sight so all your position settings remain the same. there may be a used one for sale on this website. regards using the left eye after years of using right eye.... took about three or four shots to feel comfortable.