Holosun 510C Spacer / Riser, Lower 1/3 Co-Witness. Manufactured from 6061 T6 aluminum, this Holosun 510C riser is designed to raise the HS510C Holosun quick detach mount base from an absolute co-witness height to a lower 1/3 co-witness height with standard AR-15 rifle platforms.
$19.99
Out of stock
SKU: 605930624960
Out of stock
Available for in-store pickup or to ship directly to your FFL
Holosun 510C Spacer / Riser, Lower 1/3 Co-Witness. Manufactured from 6061 T6 aluminum, this Holosun 510C riser is designed to raise the HS510C Holosun quick detach mount base from an absolute co-witness height to a lower 1/3 co-witness height with standard AR-15 rifle platforms.
Thank you for choosing Blackstone Shooting Sports! If you have any questions regarding a recent purchase, or product, please feel free to reach out to our knowledgeable Guest Support Team; chat with a team member 7-days a week from 10am until 9pm.
It is the buyer’s responsibility to ensure that the item being purchased is legal to own in your city / state. Verify with your receiving dealer if you are not 100% sure that it is legal. – Magazines that violate capacity restrictions will not be shipped or substituted.
You must be 18 or older to purchase a rifle or shotgun and 21 or older to purchase a handgun.
You are responsible for compliance to your local and state laws.
Be aware of restrictions on extended magazines and certain types of AR-15 style rifles. Not for sale where prohibited.
Firearms: Blackstone will not sell or transfer a firearm to any of the following states: California, Colorado, Connecticut, Hawaii, Illinois, Maryland, Massachusetts, Michigan, Minnesota, New Jersey, New York, Rhode Island, Washington, Guam, Puerto Rico, Samoa, Virgin Islands. In addition, we do not conduct any international sales. **Last updated 01/01/2023 (subject to change)
Automatic Knives (OTF & OTS):
Blackstone will not sell or transfer any automatic knives to any of the following states: California, Colorado, Connecticut, Hawaii, Illinois, Maryland, Minnesota, New Jersey, New York, Rhode Island, Washington, Guam, Puerto Rico, Samoa, Virgin Islands, New Mexico, Pennsylvania, Virginia. **Last updated 01/01/2023 (subject to change)
During checkout you specify a Federal Firearms Licensee (FFL) near you who transfers the firearm to you, after successful background check if needed.
FFL can be your local Gun Shop, Gun Range or Pawn Shop willing to perform the transfer.
“Local Store Pick Up” in Charlotte, NC. *Sales tax may apply.
Blackstone Shooting Sports
2001 Wilkinson Blvd.
Charlotte, NC, 28208
The buyer is responsible for all FFL’s transfer fee/s upon pickup which is generally $15-30. “Local pickup” at our Charlotte location is free of charge.
For all FFL transfers, the firearm dealer (that we are sending the item/s to) must send us their valid license (FFL) by emailing (FFL@blackstoneshooting.com). Blackstone is not responsible for any lost items shipped via USPS, FedEx, and UPS.
Ammunition Sales
All ammunition will be shipped FedEx or UPS ground; no air freight allowed.
Ammunition and firearms must be shipped separately.
Always make sure you order the correct ammunition for your specific firearm.
Federal law requires that you must be at least 18 years old to purchase shotgun and rifle ammunition and 21 years or older to purchase handgun ammo.
Check your state and local laws for any other restrictions before ordering.
Ammo Shipping Restrictions: Blackstone does not ship ammo to CA, IL, NY, NJ, MA, DC, CT, or P.O. Boxes
Return Policy & Warranty
We fundamentally believe you will be thrilled with the products you purchase from Blackstone Shooting Sports. That’s because we go out of our way to ensure we get you the exact products you need from the best brands in the industry. We understand, however, that sometimes a product may not be what you expected it to be. In that unlikely event, we invite you to review the following terms related to returning a product.
If you need to return an item or cancel an order, simply contact our Guest Support Team at 704-414-6020 or by emailing returns@blackstoneshooting.com (be sure to include your order #). Feel free to use the live chat function on our website for the fastest support. All inquires received during business hours are answered same day!
*All canceled and returned items are subject to a 10% restocking fee.
Please allow 1-5 business days to credit back to your original form of payment.
Damaged/Used Product: Unless there is a verifiable manufacturer’s defect with the merchandise, no returns will be accepted on damaged or used products. This includes firearm parts that have been previously installed.
GENERAL PARTS & ACCESSORIES
Returns Within 30 Days: The original method of payment will be refunded in full. Merchandise must be in new condition with all original packaging, documentation, accompanying accessories, and a receipt.
OPTICS
Returns Within 10 days: The original method of payment will be refunded in full. Merchandise must be in new condition with all original packaging, documentation, and a receipt. Non-cash transactions:
Restricted Items
AMMUNITION
Due to safety and liability concerns, Blackstone does not accept any returns on ammunition that have exited the facility. All online ammunition sales are final.
NEW & USED FIREARMS
Blackstone does not accept any returns on firearms. We will assist with all recalls, warranty claims, or manufacturer defects with firearms previously purchased from Blackstone.
KNIVES
Blackstone does not accept any returns on knives. This is to ensure every knife purchase from Blackstone is 100% factory sharp, blemish free, and warrantied by the manufacturer. We will assist with all recalls, warranty claims, or manufacturer defects with knives previously purchased from Blackstone.
Tax Information
North Carolina residents will be charged a 7.25% sales tax.
Questions / Contact Us
Operating Hours: Monday – Sunday: 10am – 9pm Contact Information: Please contact us with any questions or concerns We respond to inquiries same-day during business hours For fast service please reach out to our Guest Support Team: hello@blackstoneshooting.com 704.414.6020 Blackstone Shooting Sports | 2001 Wilkinson Blvd. Charlotte, NC 28208 | 704-414-6020
