Author Topic: shadow2 with holosun 507C for CO ?  (Read 580 times)

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Offline chenjeffus

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shadow2 with holosun 507C for CO ?
« on: October 08, 2019, 06:40:12 PM »
just got my Holosun 507C in today, and would like to install it on my Shadow2 for CO shooting.  however, it seems like HoloSun is about 1oz heavier than SRO.  just wondering if anybody use Shadow2 / Holosun combination?  what did you do to lower the weight to make it competition legal?

Offline 2morechains

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Re: shadow2 with holosun 507C for CO ?
« Reply #1 on: October 08, 2019, 11:17:20 PM »
Are you sure the Holosun (without the pic-rail adapter) weighs 2.65 oz?  I suspect the weight of the 507C minus rail attachment is on par with the SRO @ 1.6-ish oz.

The Shadow 2 is 46 oz and change, so it’s already over the 45.0 oz weight limit for CO.  Factor in 1.6 oz for the optic plus another 1 oz-ish for the basepads, you need to remove almost 4 oz from the slide to make weight. 

A number of companies can do this work: CZC, Primary Machine, Fire 4 Effect, CGW...  just depends on what you’re looking for.  CZC uses a plate system.  F4E has their own method of mounting without plate, as does PM and CGW now.  I went with F4E, they milled my slide for the SRO and took off enough weight from the slide so the entire gun + optic + mag w/ extension is 44.1 oz (I replaced the stock AL grips w/ Lok grips). 

Offline chenjeffus

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Re: shadow2 with holosun 507C for CO ?
« Reply #2 on: October 11, 2019, 10:51:20 PM »
I check HoloSUN 507C Spec, it says 2.65 oz.  I need to talk to both CZC and F4E to compare price.   it is going to be more than I have expected.

Offline chenjeffus

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Re: shadow2 with holosun 507C for CO ?
« Reply #3 on: October 14, 2019, 02:13:32 PM »
what kind of mag extension you use?  Tara tactical?   also, did you replace the plastic gide rid?


Offline earlan357

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Re: shadow2 with holosun 507C for CO ?
« Reply #4 on: October 25, 2019, 05:44:48 PM »
Holosun 507C with battery weighs 1.4oz.

« Last Edit: November 08, 2019, 01:15:16 PM by earlan357 »

Offline chenjeffus

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Re: shadow2 with holosun 507C for CO ?
« Reply #5 on: November 04, 2019, 10:23:39 PM »
Cool, wondering why it says 2.6 on the Holosun website. 

Offline joedirt199

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Re: shadow2 with holosun 507C for CO ?
« Reply #6 on: November 09, 2019, 11:22:57 PM »
Probably weight with the mount attached.
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