Envoy Sights - PH5c / 4651A

[davey_c]

Hi

Can anyone tell me if there are any differences between Parker Hale sights that are marked PH5c and 4651A?

I have 2 sets of sights marked 4651A, one on my Envoy and the others are spare and was wondering if they are the same as the PH5c sights.

Many Thanks

Dave

Information

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[Alan de Enfield]

Hi

Can anyone tell me if there are any differences between Parker Hale sights that are marked PH5c and 4651A?

I have 2 sets of sights marked 4651A, one on my Envoy and the others are spare and was wondering if they are the same as the PH5c sights.

Many Thanks

Dave

As far as I know they are the same.
I have read that the 4651A sights are calibrated for 7.62 ammunition (but also read there is virtually no difference in trajectory out to about 300yds)

http://www.chuckhawks.com/rifle_trajectory_table.htm
(Look at 308 and 303 = 0.2" difference at 200yds)

[Mk VII]

If that's the case then I can't see the point of placing the mark (which screams "segregate me, I am different") on the moveable arm, which only carries the vernier plate. It should be on the base, on which are engraved the (supposedly different) range marks.

[Alan de Enfield]

If that's the case then I can't see the point of placing the mark (which screams "segregate me, I am different") on the moveable arm, which only carries the vernier plate. It should be on the base, on which are engraved the (supposedly different) range marks.

Good point - and I dont know !
maybe the small 'plate' that fixes to the elevation arm has a different calibration (but then why not just engrave the 'plate' with 7.62 ?)

I have used a 5C, a 4651A and an AJP 4/47 on my No4 with no measurable differences.

I recently purchased a Long Branch No4 7.62 'target' rifle that had a 4651A sight (with a correct Sterling mag and PH tunnel front sight it looked 'original').
This helped give credence to the story that 4651A = 7.62.