- Low stock
AT3 Tactical
AT3 Mil-Spec AR-15 Carbine Buffer Tube
Real AR-15 mil-spec carbine buffer tube with six-position stock adjustment, aluminum construction, and color options.
Buffer TubeSKU ATOnly 1 left
From
$17.99
Collection
Mil-Spec AR-15 Buffer Tubes & Parts
Mil-spec AR-15 buffer tubes and related parts support stock installation, receiver-extension setup, and compatible AR-pattern furniture. Shop carbine, pistol, and rifle-length receiver extensions, castle nuts, end plates, foam covers, drop-down adapters, and supporting hardware.Confirm tube diameter, length, thread compatibility, stock requirements, and included hardware before ordering. Select products may also fit First Strike T15 and Legacy Performance T16 paintball platforms that use a compatible AR-pattern buffer tube interface; review individual product compatibility before purchase.
Add $75 more to unlock free shipping. U.S. orders qualify at $75.
AT3 Tactical
AT3 Castle Nut for AR-15 Buffer Tubes
Firearm-compatible AR-15 castle nut with steel construction, Mil-Spec threading, staking notches, wrench cutouts, and multiple color options.
Buffer TubeSKU AT3-Castle-01
From
$5.99
Omega Tactical
No Comply Mil-Spec Buffer Tube
Real laser-engraved Mil-Spec buffer tube for compatible 6-position rear stock setups.
Buffer TubeSKU OTMCO-84545
$14.99
- Sold out
Anderson Manufacturing
Anderson Manufacturing AR-15 Buffer Tube Castle Nut
Firearm-compatible AR-15 castle nut with steel construction, manganese phosphate finish, wrench cutouts, and MIL-SPEC buffer tube fitment.
Buffer TubeSKU AM-26Sold out
$9.99
- Sold out
Anderson Manufacturing
Anderson Manufacturing AR-15 Mil-Spec Carbine Buffer Tube
Firearm-compatible AR-15 carbine buffer tube with Mil-Spec diameter, 7075-T6 aluminum construction, hardcoat anodized finish, and 6-position adjustment.
Buffer TubeSKU AM-21-CARSold out
$24.99
- Low stock
Strike Industries
Strike Industries TRIBUS Enhanced Castle Nut & End Plate V2
Integrated Strike Industries TRIBUS V2 castle nut and enhanced end plate for compatible AR-pattern carbine receiver extensions, with multiple sling-attachment positions.
Castle Nut & End PlateSKU SI-AR-TRIBUS-BKOnly 2 left
$59.95
- Sold out
JE Machine
JE Machine Fluted Pistol Buffer Tube Type 2
Real fluted pistol-length buffer tube for compatible buffer tube-style rear setups.
Buffer TubeSKU OTM24556Sold out
$24.99
- Low stock
Omega Tactical
Omega Mfg. Pistol Buffer Tube Foam Cover
Real foam buffer tube cover for compatible pistol buffer tube setups.
Buffer Tube CoverSKU OTMFOAMPADOnly 2 left
$4.99
Omega Tactical
Omega Mfg. Heavy Duty Pistol Buffer Tube
Real heavy-duty pistol buffer tube for compatible rear tube setups.
Buffer TubeSKU OTM4139
$12.99
- Sold out
JE Machine
JE Machine A2 Rifle Tube with Screw
Real A2 rifle tube with screw for compatible fixed-stock configurations.
Buffer TubeSKU OTM67854Sold out
$27.99
Compatibility note: confirm product details, air source, platform fitment, and manufacturer instructions before ordering critical parts.