Picture 1 of 5

Stock photo

HOLOSUN Lower 1/3 Co-Witness Spacer for 510C Reflex Sight, Black (510CSPACER) - Picture 1 of 5

HOLOSUN Lower 1/3 Co-Witness Spacer for 510C Reflex Sight, Black (510CSPACER) - Picture 2 of 5

HOLOSUN Lower 1/3 Co-Witness Spacer for 510C Reflex Sight, Black (510CSPACER) - Picture 3 of 5

HOLOSUN Lower 1/3 Co-Witness Spacer for 510C Reflex Sight, Black (510CSPACER) - Picture 4 of 5

HOLOSUN Lower 1/3 Co-Witness Spacer for 510C Reflex Sight, Black (510CSPACER) - Picture 5 of 5

Holosun 510CSPACER 1/3 Spacer for 510C Optic

5.09 product ratings

gritroutdoors (79906)

99.5% positive feedback

Price:

$27.99

Free shipping

Estimated delivery Wed, Dec 3 - Sat, Dec 6

Returns:

30 days returns. Seller pays for return shipping.

Condition:

New

At Holosun, it's simple. Holosun is the industry leader in bringing feature-rich, high-quality products at a price that won't leave you stranded for ammo money. The Holosun Spacer raises 510C optics to a lower 1/3rd co-witness.

Ratings and Reviews

Learn more

5.0

9 product ratings

9 users rated this 5 out of 5 stars
0 users rated this 4 out of 5 stars
0 users rated this 3 out of 5 stars
0 users rated this 2 out of 5 stars
0 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

by 5641dan
May 16, 2024
Works great
Works as designed. The riser makes it easier for me to get a good cheek weld.
Verified purchase: YesCondition: New
by aweaver24
Sep 25, 2022
You need it
In my opinion this should just came with the 510c because with out it I was looking though just the top part of the sights window with was very annoying
Verified purchase: YesCondition: New
by rudejr01
Sep 18, 2023
Aim & shoot
Fit and finish excellent, easy to install.
Verified purchase: YesCondition: New
by scott-moore
Apr 14, 2022
1/3 rise
Works great at prices at 1/3 above rear and front sights would be nice if it came with the Red Dot
Verified purchase: YesCondition: New
by rabu-us2014
Jan 04, 2024
Great investment.
This is a good investment for my red dot holosun, now it's much easier to the red site.
Verified purchase: YesCondition: New
by ilikegold81
May 30, 2022
works fine
great product work as intended
Verified purchase: YesCondition: New
by illgore
Jan 25, 2023
Perfect
Raises the 510 C to the perfect height
Verified purchase: YesCondition: New
by teresitgran-0
Jun 16, 2025
Everything included, works as expected....
Everything included, works as expected.
Verified purchase: YesCondition: Pre-owned