We may get paid by partner for deals, including promoted items

Menu

Trending
Top Brands Palmetto State ArmoryHot Yeti CoolerDeal Midway USA Sitka 5.11Sale Winter Clearance Amazon Pickleball Sale Amazon FitnessHot Socks
Low Profile Steel Castle Nut Replacement for ARH300

Product Description

This low profile castle nut comes standard with all of our Folding Stock Adapters, but can also work to replace your regular castle nut, adding room for extra attachments.

Low Profile Steel Castle Nut Replacement for ARH300

at Sylvan Arms
$4.00
Amazon logo Check Price on Amazon eBay logo Check Price on eBay
    Last Updated:
    Dec 02, 2025 10:50 PM
    QD Sling Attachment New QD Sling Attachment New More Info...
    $25.19$35.99
    30% off
    Sylvan Arms
    💬 1
    Last Updated:
    Dec 02, 2025 10:50 PM
    Sylvan Arms Flared Magwell Sylvan Arms Flared Magwell More Info...
    $41.99
    Sylvan Arms
    💬 2
    Last Updated:
    Dec 02, 2025 10:50 PM
    CZ Scorpion Adapter CZ Scorpion Adapter More Info...
    $43.99
    Sylvan Arms
    💬 3
    Last Updated:
    Dec 02, 2025 10:50 PM
    QD Picatinny 7 Slot Rail Mount QD Picatinny 7 Slot Rail Mount More Info...
    $43.99
    Sylvan Arms
    💬 4
    Last Updated:
    Dec 02, 2025 10:50 PM
    6 PT Dotted Design Buffer Tube 6 PT Dotted Design Buffer Tube More Info...
    $43.99
    Sylvan Arms
    💬 5
    Last Updated:
    Dec 02, 2025 10:50 PM
    Sylvan Arms Glock 9mm Compensator Sylvan Arms Glock 9mm Compensator More Info...
    $71.99
    Sylvan Arms
    💬 6
    Last Updated:
    Dec 02, 2025 10:50 PM
    Rail Combo Rail Combo More Info...
    $71.99
    Sylvan Arms
    💬 7
    Last Updated:
    Dec 02, 2025 10:50 PM
    3 Piece Rail Combo Pack 3 Piece Rail Combo Pack More Info...
    $104.99
    Sylvan Arms
    💬 8
    Last Updated:
    Dec 02, 2025 10:50 PM
    SA/MC Sling Combo Black SA/MC Sling Combo Black More Info...
    $110.00
    Sylvan Arms
    💬 9
    Last Updated:
    Dec 02, 2025 10:50 PM
    SA/MC Sling Combo Coyote Brown SA/MC Sling Combo Coyote Brown More Info...
    $110.00
    Sylvan Arms
    💬 10
    Last Updated:
    Dec 02, 2025 10:50 PM
    SA/MC Sling Combo Ranger Green SA/MC Sling Combo Ranger Green More Info...
    $110.00
    Sylvan Arms
    💬 11
    Last Updated:
    Dec 02, 2025 10:50 PM
    SA/MC Sling Combo MultiCam SA/MC Sling Combo MultiCam More Info...
    $110.00
    Sylvan Arms
    💬 12
    Last Updated:
    Dec 02, 2025 10:50 PM
    AR-15 to 9mm Glock Conversion Block NEW AR-15 to 9mm Glock Conversion Block NEW More Info...
    $114.99
    Sylvan Arms
    💬 13
    Last Updated:
    Dec 02, 2025 10:50 PM
    AR-15 .223/5.56 NATO/.300 Blackout/.350 Legend Rear Charging AR-15 Bolt Carrier Group AR-15 .223/5.56 NATO/.300 Blackout/.350 Legend Rear Charging AR-15 Bolt Carrier Group More Info...
    $115.00
    Sylvan Arms
    💬 14
    Last Updated:
    Dec 02, 2025 10:50 PM
    Titan CZ Scorpion Folding Stock Adapter Gen 2 Titan CZ Scorpion Folding Stock Adapter Gen 2 More Info...
    $149.99
    Sylvan Arms
    💬 15
    Last Updated:
    Dec 02, 2025 10:50 PM
    AR15 and AR9 Folding Stock Adapter Gen. 3 Black AR15 and AR9 Folding Stock Adapter Gen. 3 Black More Info...
    $179.99
    Sylvan Arms
    💬 16
    Last Updated:
    Dec 02, 2025 10:50 PM
    AR15 and AR9 Folding Stock Adapter Gen. 3 OD Green AR15 and AR9 Folding Stock Adapter Gen. 3 OD Green More Info...
    $189.99
    Sylvan Arms
    💬 17
    Last Updated:
    Dec 02, 2025 10:50 PM
    Sylvan Arms Soft Armored Ballistic Shirt White/Large (LG) Sylvan Arms Soft Armored Ballistic Shirt White/Large (LG) More Info...
    $280.00
    Sylvan Arms
    💬 18
    Last Updated:
    Dec 02, 2025 10:50 PM
    Tomcat .22 Titanium Suppressor Tomcat .22 Titanium Suppressor More Info...
    $414.99
    Sylvan Arms
    💬 19
    Last Updated:
    Dec 02, 2025 10:50 PM
    Apache 9mm Titanium Suppressor Apache 9mm Titanium Suppressor More Info...
    $674.99
    Sylvan Arms
    💬 20
    An unhandled error has occurred. Reload 🗙