+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

Worked great nice color match too - AT3 Tactical Castle Nut for AR-15 Buffer Tubes

by Michigan Backcountry Redneck, Verified Owner from MI, United States Written on April 28, 2026
Review for AT3 Tactical Castle Nut for AR-15 Buffer Tubes
AT3 Tactical Castle Nut for AR-15 Buffer Tubes
AT3 Tactical Castle Nut for AR-15 Buffer Tubes
As Low As $6.99 Save Up to 18%
View Product
Write a Review View All Reviews
Compare (0)
1 item has been added
Add at least two items to compare

Michigan Backcountry Redneck's Review of AT3 Tactical Castle Nut for AR-15 Buffer Tubes

Needed to replace a cracked castle nut that was keyed wrong as well and could not be tightened with a standard castle nut wrench as you would use in these applications. The new one works perfect with my AR castle nut wrench, and it came in a nice FDE color.
Pros:
  • Cheap / good quality
Cons:
  • None
Would Recommend: Yes
Was it helpful to you? Yes | No
Share