Aimpiont PRO in a QRP2, just the QRP2 and then the PRO in an older gen Bobro 1/3 QD mount.
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Steiner P4Xi 1-4 and ADM Recon 30mm 1.54" mount = 1 lb 8.9 oz
Elcan SpecterDR 1/4 with ARMS MK2 levers = 1 lb 6.1 oz
EXPS3-0 with G33 magnifier and Larue LT101 (qd levers) = 1 lb 10.4 oz
EXPS3-2 = 11.0 oz
G33 with spacer = 11.1 oz
Leupold Mark 1 IMS 0.56" riser 3.1 oz
T2 without OEM caps and Larue LT660 (lower 1/3 height) = 6.1 oz
ACO and Bobro (lower 1/3 height) = 11.6 oz
Vortex Razor Gen II 1-6 MRAD VMR and Geissele 30mm 2.04" mount = 2 lb 1.9 oz
Leupold MK6 1-6 CMR-W + switchview throw lever + Larue 1.54” SPR QD mount + Larue LT787 ring mount + Aimpoint T2 piggybacked = 1 lb 13.2 oz
Leupold MK6 1-6 CMR-W + switchview throw lever + KAC ERR 34mm 1.93 mount + KAC Scope Body T-1 Reflex Mount + Aimpoint T2 piggybacked = 1 lb 12.5 oz
NF NX8i + Scalarworks LEAP 1.57" Mount = 1lb 7.4oz / 23.4oz
Primary Arms 2.5x Prism Scope and American Defense Quick Release mount----1:00 pound.
Weight is not everything but it is something.
Same optic with AD-B3 is 13.6oz
Thanks for this thread. I’m running the fixed 4x and considering going to a LPVO on my 16”. I’ll either stick with the acog or or rethink my heavy centurion rail.
Nx8, 1-8. 1.70" C1 mount
Optic: Primary Arms SLx8 1-8x24mm SFP Rifle Scope - Illuminated ACSS-5.56/5.45/.308
Optic Mount: LaRue LT240 C.A.N QD SPR Mount w/ 30mm Rings
Combined Weight: 1 lb 8.7oz
Kahles 1-6x24i + Scalarworks LEAP 1.93" Mount + Aadland scope caps = 1lb 8.8oz
I generally find that Leupold has the lightest optics for a given capability.
That is true, I’ve noticed that as well. And often wondered, what are they leaving out? 
Leupold FX-II Ultralight 2.5x20mm in Daniel Defense Mount - 12.0 ounces
Aimpoint Comp M2 in a Scalarworks LEAP mount= 10.4 oz. That’s the nekkid Aimpoint, no bikini cover or flip up lens covers.
New concept model March-F 1-10×24 FFP Shorty Scope, 17.18 oz’s and the Scalarworks 30mm 1.57" H, Leap scopemount, 5.62oz = 22.80 oz’s .
https://marchscopes.com/news/3798/
https://scalarworks.com/shop/quick-detach-mounts/leap-07/
The MARCH 1-10 is nutzzz…too bad it’s concept only at this point…
I mounted a Vortex Viper HS 2.5-10x44 scope on a bolt rifle today, so I popped it on the scale. Including Vortex Defender scope caps and 30mm Vortex Pro rings the scope weights 22 ounces.
Swapped my Aero SPR mount for a LaRue CAN.
Aero=3.5oz
CAN=7.3oz
PA 1-6 ACSS Gen3 with CAN=1lb 8.5oz 
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Comp M3 in Scalerworks Leap mount.
G regular height (I think 1.5”) Extended 30mm mount only: 7.4oz
Comp M4 in Larue lower third QD mount with Aimpoint clear flip covers and killflash: 12.8oz
PRO in ADM lower third QD mount with Aimpoint flip covers: 11.1oz
P4Xi in ADM Recon H QD with cattail: 25.3oz
T5Xi in ADM Recon H QD with cattail and flip caps: 28.4oz
Vortex VMX-3T mag in lower third mount: 11.7oz
Since ADM has a new Ti QD lever (claimed weight reduction “over 50%”), the non-Ti QD assemblies weigh 1.2oz each.
All weights include battery, if applicable.
True lever and batteries included.
Razor HD Gen II-E and Geissele 1.93 extended.
Badger lower 1/3 cowitness COMM with j-arm and Aimpoint micro mounting plate.
Same mount with Razor E and Crossfire.
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Aimpiint T-2 in Bobro QD mount.
EOTech G33 mag with included flip to side QD mount.
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