SPUHR Aimpoint T1/T2 Mount vs Geissele T1/T2 Mount

[ihcnehc]

Related post: Geissele Super Precision Aimpoint T1 Lower 1/3 with Wilcox EOTech Flip Mount https://www.m4carbine.net/showthread.php?182554-Geissele-Super-Precision-Aimpoint-T1-Lower-1-3-with-Wilcox-EOTech-Flip-Mount


SPUHR Aimpoint T1/T2 Mount P/N: SM-2007 ( 39mm / 1.535" ). This is not the FBI HRT mount ( 41mm, P/N: SM-2007B ).
Geissele Super Precision Aimpoint T1 Mount PN: 05-472 ( lower 1/3 co-witness ).

The standard Aimpoint lower 1/3 height, in my view and according to the Aimpoint spacer, is 39mm. I measured both SPUHR and Geissele height ( optic center from top of rail: bottom of bezel to top of rail + 1/2 bezel diameter ) with a caliper, with a T2 the SPUHR is about 40.3 mm and Geissele is about 38.9 mm. T2 sits about 1mm higher than T1 because T2 has deeper screw holes.

SPUHR SM-2007 weights 3.1 oz ( w/ all hardware ).
Geissele 05-472 weight 2.8 oz ( w/ all hardware ).
Bobro B13-111-003 weights 3.9 oz ( w/ all hardware ).

All SPUHR screws are torx Metric class 10.9, roughly equal to SAE Grade 8.
The four screws come with Geissele are Metric class 12.9 and made by YFS.

SPUHR packaging and box contents:
http://i1294.photobucket.com/albums/b602/ihcnehc/2016-APR-05%20Geissele%20and%20Spuhr%20Micro%20Mount/_spuhr_box_01_zps0lyuvqgi.jpg

http://i1294.photobucket.com/albums/b602/ihcnehc/2016-APR-05%20Geissele%20and%20Spuhr%20Micro%20Mount/_spuhr_box_02_zpsqtiaacpu.jpg



http://i1294.photobucket.com/albums/b602/ihcnehc/2016-APR-05%20Geissele%20and%20Spuhr%20Micro%20Mount/_spuhr_weight_01_zpskftdnpzf.jpg

http://i1294.photobucket.com/albums/b602/ihcnehc/2016-APR-05%20Geissele%20and%20Spuhr%20Micro%20Mount/_geissele_weight_01_zpssdfohrb2.jpg

http://i1294.photobucket.com/albums/b602/ihcnehc/2016-APR-05%20Geissele%20and%20Spuhr%20Micro%20Mount/_spuhr_view_right_zps0klqf1k9.jpg

http://i1294.photobucket.com/albums/b602/ihcnehc/2016-APR-05%20Geissele%20and%20Spuhr%20Micro%20Mount/_spuhr_view_left_zps0omqanos.jpg

http://i1294.photobucket.com/albums/b602/ihcnehc/2016-APR-05%20Geissele%20and%20Spuhr%20Micro%20Mount/_spuhr_view_bottom_zpshnlsmtcm.jpg


SPUHR vs Geissele T1/T2 mount height:
http://i1294.photobucket.com/albums/b602/ihcnehc/2016-APR-05%20Geissele%20and%20Spuhr%20Micro%20Mount/_spuhr_geissele_01_zpsbbto1dwi.jpg

[Coal Dragger]

Thanks for the photos for reference. Between the two I think I'd pick the Geissele, I have more confidence in the long term durability of a 1/2" nut than the smaller screws on the Spuhr mount. Mostly due to my own incompetence with fasteners, and stripping out heads of said fasteners.

[ihcnehc]

FYI - all SPUHR hardware are torx and are class 10.9, which is roughly equal to SAE Grade 8. The screw holes for the two cross bolts are threaded from one end to the other. The four mounting screws from Geissele are Metric class 12.9 and are made by YFS.

Class 10.9 has min tensile strength of 151000 psi and min yield strength of 136000 psi.


Thanks for the photos for reference. Between the two I think I'd pick the Geissele, I have more confidence in the long term durability of a 1/2" nut than the smaller screws on the Spuhr mount. Mostly due to my own incompetence with fasteners, and stripping out heads of said fasteners.

[Coal Dragger]

That's nice. I can assure you that my stupid ass can still strip out the Torx heads on those bolts. Not because they're not strong, or well made; I'm just that unlucky and ham fisted.

[quackhead]

Brining this one back. I really like the aesthetics and form of the spuhr mounts ( have been a long time Larue user) I recently mounted 2 x T2s in spuhr mounts and stripped out the T10 torx heads in both that secure the T2 to the mount - it was all hand tightented with a proper T10 driver. I don't think the screws are properly hardened as I didn't exert too much force The T20 cross bolts that secure mount to receiver are a different story.

[ihcnehc]

Per Aimpoint manual, the M3 screws are to be tightened to ~1.35Nm, roughly about 11 - 12 in-lbs. Hold the screwdriver with just 3 fingers and tighten the screws up in crosswise pattern would do it if you don't have a torque driver. I tighten mine to 9 in-lbs. Over 8K rounds of 556 and it has held up fine.

Aimpoint T2 manual:
http://www.aimpoint.com/fileadmin/user_upload/2015_Web_Content/Product_PDFs/User_Manuals/Sights/Micro_Series/13939-2_Manual_Micro_T-2_QuickRef_ENG_LoRes.pdf


I now use GDI mounts. Very strong, excellent field of view, due to its center hollow design, return to zero fine, and does not mar upper receiver.
http://i.imgur.com/W5XVHWg.jpg



Brining this one back. I really like the aesthetics and form of the spuhr mounts ( have been a long time Larue user) I recently mounted 2 x T2s in spuhr mounts and stripped out the T10 torx heads in both that secure the T2 to the mount - it was all hand tightented with a proper T10 driver. I don't think the screws are properly hardened as I didn't exert too much force The T20 cross bolts that secure mount to receiver are a different story.

[vicious_cb]

Brining this one back. I really like the aesthetics and form of the spuhr mounts ( have been a long time Larue user) I recently mounted 2 x T2s in spuhr mounts and stripped out the T10 torx heads in both that secure the T2 to the mount - it was all hand tightented with a proper T10 driver. I don't think the screws are properly hardened as I didn't exert too much force The T20 cross bolts that secure mount to receiver are a different story.

You dont need fancy torque measuring devices. Just get an L-shaped allen or torx wrench and using the LONG end, use the 3 fingers hand tight method.

Also with a T-2 DO NOT use thread locker as they have spiral coils in the mounting points.