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
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.
$4.00
Frequently Purchased With
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Sylvan Arms Flared Magwell
$49.99 Add to cartOur Flared Magwell allows no-look, faster loading of magazines. With integral trigger guard, and wider flare than competing products, the Sylvan Arms Flared Magwell outperforms any other magwell available on the market today.
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QD 3 Slot Rail Mount QDR100
$39.99 Add to cartThis quick disconnect rail mount is a 3-slot Picatinny to M-LOK adapter. Designed for rapid attachment and detachment of rail sections without the need for tools.
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QD Sling and Rail Mount Combo – 3 Pack
$117.99 Add to cartThis quick disconnect rail mount combo kit includes our 3-slot and 7-slot Picatinny to M-LOK adapter and a QD Sling Mount. Designed for rapid attachment and removal of rail sections without the need for tools.
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QD Right Side Backplate for AR15
$24.99 Add to cartThe Sylvan Arms QD Backplate is a replacement for a Mil-spec lower receiver backplate that includes a QD sling mount on the RIGHT side.
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Sylvan Arms Glock Compatible 43 + 2 Magazine Extensions
$29.99 Add to cartThis magazine extension allows for a more secure and comfortable grip, giving you better accuracy all while adding an extra 2 rounds to your Glock 43 6 round magazines.