Remington R-51 Pistol Forum

General Category => R51 General Discussion => Topic started by: tdbru on May 15, 2018, 06:23:47 PM

Title: point of impact shift with trijicon night sight set???
Post by: tdbru on May 15, 2018, 06:23:47 PM
if anyone has installed the trijicon sight set, did you observe a POI shift with the new sights?  if so, which way?
thanks,
Brian
Title: Re: point of impact shift with trijicon night sight set???
Post by: Engineerpower on May 18, 2018, 06:29:12 AM
I think Trijicon may publish the sight heights for their various models? Windage, of course, is adjustable, so you should be able to just check the height difference to see the change in POI.
Title: Re: point of impact shift with trijicon night sight set???
Post by: koop on May 18, 2018, 10:05:30 AM
speaking of sights, and sorry if this is a hijack, but does anyone know what size the nuts on the front and rear sights are?  I've tried both metric and standard and neither catch.

TIA
Title: Re: point of impact shift with trijicon night sight set???
Post by: Pat Riot on May 18, 2018, 11:00:45 AM
I thought I responded to this yesterday but...

Anyway, if they are the sights that Remington sells on their sight it may be that the point of aim will be the same as factory.
I bought the Remington fiber optic sights and the point of aim is still 4" low at 7 yards, which is what I saw with stock sights.
The good news is I was able to tighten my groups with the new sights.
Title: Re: point of impact shift with trijicon night sight set???
Post by: tdbru on May 18, 2018, 02:39:49 PM
this from Remington:

Remington Support
Service Ticket Response

Good morning,

  The front sight will be a 1/16" Allen head size and the rear sight is a 5/64" Allen head size

and i did confirm those sizes of allen wrenches seem to fit my R51 sights.  the rear seems to have a bit more play than the front, so perhaps my 5/64" allen wrench might be just a wee tad undersize?  but i'm sure it will work.

i could also fit a 2mm(?) metric allen wrench in the rear sight set screw.  and it seems to fit a tiny bit tighter than the 5/64".
tdbru
Title: Re: point of impact shift with trijicon night sight set???
Post by: Engineerpower on May 20, 2018, 08:27:06 AM
Quote from: Pat Riot on May 18, 2018, 11:00:45 AM
I thought I responded to this yesterday but...

Anyway, if they are the sights that Remington sells on their sight it may be that the point of aim will be the same as factory.
I bought the Remington fiber optic sights and the point of aim is still 4" low at 7 yards, which is what I saw with stock sights.
The good news is I was able to tighten my groups with the new sights.

Hrm, that's not good. Much easier to lower POI than to raise it. If you don't mind losing the R51 aesthetics on the rear sight, you could install a higher rear sight from another pistol (maybe a CZ) or find a really low front sight (big dot maybe, or again a CZ).

Is low POI a common issue? Higher rear sight could be another good aftermarket product.
Title: Re: point of impact shift with trijicon night sight set???
Post by: Pat Riot on May 21, 2018, 10:10:21 AM
Quote from: Engineerpower on May 20, 2018, 08:27:06 AM
Quote from: Pat Riot on May 18, 2018, 11:00:45 AM
I thought I responded to this yesterday but...

Anyway, if they are the sights that Remington sells on their sight it may be that the point of aim will be the same as factory.
I bought the Remington fiber optic sights and the point of aim is still 4" low at 7 yards, which is what I saw with stock sights.
The good news is I was able to tighten my groups with the new sights.

Hrm, that's not good. Much easier to lower POI than to raise it. If you don't mind losing the R51 aesthetics on the rear sight, you could install a higher rear sight from another pistol (maybe a CZ) or find a really low front sight (big dot maybe, or again a CZ).

Is low POI a common issue? Higher rear sight could be another good aftermarket product.

Well, it seems to be this way with a couple of other folks I know that have R51's. They hit low. I kind of thought new sights would fix this but it did not. The gun groups great so the elevation issues don't really bother me. I will not be using it in competitions.
Title: Re: point of impact shift with trijicon night sight set???
Post by: lklawson on May 22, 2018, 02:19:04 PM
Quote from: Pat Riot on May 21, 2018, 10:10:21 AM
Quote from: Engineerpower on May 20, 2018, 08:27:06 AM
Quote from: Pat Riot on May 18, 2018, 11:00:45 AM
I thought I responded to this yesterday but...

Anyway, if they are the sights that Remington sells on their sight it may be that the point of aim will be the same as factory.
I bought the Remington fiber optic sights and the point of aim is still 4" low at 7 yards, which is what I saw with stock sights.
The good news is I was able to tighten my groups with the new sights.

Hrm, that's not good. Much easier to lower POI than to raise it. If you don't mind losing the R51 aesthetics on the rear sight, you could install a higher rear sight from another pistol (maybe a CZ) or find a really low front sight (big dot maybe, or again a CZ).

Is low POI a common issue? Higher rear sight could be another good aftermarket product.

Well, it seems to be this way with a couple of other folks I know that have R51's. They hit low. I kind of thought new sights would fix this but it did not. The gun groups great so the elevation issues don't really bother me. I will not be using it in competitions.
Remington sets their sites at what is sometimes referred to as "Combat Center Hold."  If you're used to the classic "Bullseye Hold" or "6 o'clock" hold, then the POI will be low every time.

In "combat center hold," the POI is supposed to be the spot on the front sight, not the top edge or the bull above the top edge.

This is such a common complaint that it should be part of a FAQ or something.

(https://www.hipointfirearmsforums.com/attachments/sight-picture-511-png.40894/)

Peace favor your sword,
Kirk
Title: Re: point of impact shift with trijicon night sight set???
Post by: T3 on June 27, 2018, 02:17:26 PM
Guys,
I purchased the set and only installed the front sight, which was much better for me.  Conman37 has posted a picture of his modification on the remingtonowners.com website.  It looks like it was a lot of work, but he did a great job.
Over 800 rounds and no complaints,
T3
Title: Re: point of impact shift with trijicon night sight set???
Post by: R51Fan2017 on June 27, 2018, 07:37:33 PM
Mine hits at least a good 7 inches low. And I know it isn't me because I was using a bench to steady my aim and act as a support, so I know I wasn't just shooting all over the map. Strange. I guess QC was just testing for functionality. They obviously haven't noticed our guns aren't exactly  "on target".  I think I will get another pair of sights and experiment with those instead of messing up my factory sights.
Title: Re: point of impact shift with trijicon night sight set???
Post by: funflyer on June 28, 2018, 08:45:58 AM
Quote from: T3 on June 27, 2018, 02:17:26 PM
Guys,
I purchased the set and only installed the front sight, which was much better for me.  Conman37 has posted a picture of his modification on the remingtonowners.com website.  It looks like it was a lot of work, but he did a great job.
Over 800 rounds and no complaints,
T3


The Trijicon front sight is .171" tall, and the rear is .232". Stock R51 sights are .180", front and rear. Using both front, and rear, Trijicon sights might send the POI to the moon