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Buffer / Buffer Tube Parts
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SMOS AR15 Castle Nut w/ Set Screw
SMOS / Stubborn Mule Outdoor Supply
SMOS-CASTLE-NUT
New product
SMOS Castle Nut with Set Screw for AR15 carbine buffer tubes
This product is no longer in stock
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SMOS Castle Nut with Set Screw
for AR15 carbine (mil spec and commercial) buffer tubes
From the innovators at Stubborn Mule Outdoor Supply...
No more need to stake the castle nut making it near impossible to remove! Just tighten the set screw and you're done! Easy to remove in the event you want/need to remove the buffer tube from your AR15 lower.
Check below to purchase the "kit" -- same castle nut with the SMOS buffer tube and SMOS QD receiver end plate.