AR-15Specifications
Mfr data- Weight
- 0.66 oz
- finish
- Phosphate
- material
- High Carbon Steel
- mil spec
- Yes
- warranty
- Manufacturer's warranty
- wrench size
- Standard AR-15 castle nut wrench
- staking type
- Traditional staking notches
- thread pitch
- 1-3/16-16 TPI
- color options
- Black
- compatible with
- Mil-spec carbine buffer tubes,Commercial carbine buffer tubes,VLTOR A5 receiver extensions
- country of origin
- USA
VLTORLCL-P-6592
VLTOR Receiver Lock Nut (Castle Nut)
VLTOR Weapon Systems is the originator of the A5 receiver extension system and remains the industry reference for buffer system engineering. Their standalone castle nut is a mil-spec compatible component designed to work with any AR-15 receiver extension, including their A5 system tubes. At $5.
Castle Nut0.66 oz
Best price today$5.50
Best pricePrice comparison — 3 offers
By priceUnknown RetailerBest priceThis listing
In stock$5.50Affiliate disclosure: Loadout Combat Lab may earn a commission from qualifying purchases made through retailer links. Rankings are by price — never sponsored.
Fits These Platforms
Similar Parts
Precision
Defense Mil Spec Steel Castle Nut
Castle Nut$5.99
Phase 5
Phase 5 AR-15 Receiver Extension Castle Nut
Castle Nut$5.00
Midwest Industries
MI AR Receiver Extension Lock Ring (M4BSTK-CN)
Castle Nut$5.00
Luth-AR
Luth-AR Lock Ring/Castle Nut, Carbine, MBA-3 & 4 Car Buff Kits Only, Black, CS-02
Castle Nut$4.99
XTS
XTS Castle Nut, Black CN
Castle Nut$4.99
Magpul
Magpul Mil-Spec Steel Castle Nut
Castle Nut$4.95