GunPartPicker
LBE Unlimited AR-15 Pistol Buffer Tube, Black - PBT-BLK

LBE Unlimited

LBE Unlimited AR-15 Pistol Buffer Tube, Black - PBT-BLK

Buffer Tube Spec: Mil-Spec
Buffer Tube Type: Pistol
Color: Black
Material: 6061-T6 Aluminum
Finish: Hardcoat Anodized
$19
Currently Available
LBE Unlimited AR-15 Pistol Buffer Tube Kit, Black - PBUFKT-BLK

LBE Unlimited

LBE Unlimited AR-15 Pistol Buffer Tube Kit, Black - PBUFKT-BLK

Buffer Tube Spec: Mil-Spec
Buffer Tube Type: Pistol
Color: Black
Material: 6061-T6 Aluminum
Finish: Hardcoat Anodized
$39
Currently Available
LBE Unlimited AR-15 Mil-Spec Buffer Tube Kit, Red - MILBUFKT-RED

LBE Unlimited

LBE Unlimited AR-15 Mil-Spec Buffer Tube Kit, Red - MILBUFKT-RED

Buffer Tube Spec: Mil-Spec
Color: Red
$39
Currently Available
LBE Unlimited AR-15 Milspec Buffer Tube Kit, Colt Gray - MILBUFKT-CG

LBE Unlimited

LBE Unlimited AR-15 Milspec Buffer Tube Kit, Colt Gray - MILBUFKT-CG

Buffer Tube Spec: Mil-Spec
Color: Gray
$42
Currently Available
LBE Unlimited AR-15 Milspec Buffer Tube, Red - MBUF002-RED

LBE Unlimited

LBE Unlimited AR-15 Milspec Buffer Tube, Red - MBUF002-RED

Buffer Tube Spec: Mil-Spec
Color: Red
$18
Currently Available
LBE Unlimited AR-15 Milspec Buffer Tube, Colt Gray - MBUF002-CG

LBE Unlimited

LBE Unlimited AR-15 Milspec Buffer Tube, Colt Gray - MBUF002-CG

Buffer Tube Spec: Mil-Spec
Buffer Tube Type: Carbine
Color: Gray
$18
Currently Available
LBE Unlimited AR-15 Buffer Retaining Pin, 10 Pack - ARBRP

LBE Unlimited

LBE Unlimited AR-15 Buffer Retaining Pin, 10 Pack - ARBRP

Buffer Tube Spec: Mil-Spec
Buffer Tube Type: Carbine
Color: Black
Material: 7075-T6 Aluminum
Finish: Nitride
$15
Currently Available
LBE Unlimited AR-15/M4 Buffer Tube Kit with H3 Buffer Black

LBE Unlimited

LBE Unlimited AR-15/M4 Buffer Tube Kit with H3 Buffer Black

Buffer Tube Spec: Mil-Spec
Buffer Tube Type: Carbine
Color: Black
$77
Currently Available
LBE Unlimited AR-15/M4 Buffer Tube Kit with H2 Buffer Black

LBE Unlimited

LBE Unlimited AR-15/M4 Buffer Tube Kit with H2 Buffer Black

Buffer Tube Spec: Mil-Spec
Buffer Tube Type: Carbine
Color: Black
$79
Currently Available
LBE Unlimited AR-15/M4 Buffer Tube Kit with H1 Buffer Black

LBE Unlimited

LBE Unlimited AR-15/M4 Buffer Tube Kit with H1 Buffer Black

Buffer Tube Spec: Mil-Spec
Buffer Tube Type: Carbine
Color: Black
$57
Currently Available
LBE Unlimited Mil Spec 4-Position Buffer Tube

LBE Unlimited

LBE Unlimited Mil Spec 4-Position Buffer Tube

Buffer Tube Spec: Mil-Spec
Buffer Tube Type: Carbine
Color: Black
$23
Currently Available
LBE Unlimited AR15 Mil Spec Diameter Buffer Tube Black

LBE Unlimited

LBE Unlimited AR15 Mil Spec Diameter Buffer Tube Black

Buffer Tube Spec: Mil-Spec
Buffer Tube Type: Carbine
Color: Black
$20
Currently Available
LBE Unlimited AR-15 Milspec Buffer Tube, Brown - MBUF002-WB

LBE Unlimited

LBE Unlimited AR-15 Milspec Buffer Tube, Brown - MBUF002-WB

Buffer Tube Spec: Mil-Spec
Buffer Tube Type: Carbine
Material: 6061-T6 Aluminum
$19
Currently Unavailable
LBE Unlimited AR-15 Mil-Spec Buffer Tube Kit, Brown - MILBUFKT-WB

LBE Unlimited

LBE Unlimited AR-15 Mil-Spec Buffer Tube Kit, Brown - MILBUFKT-WB

Buffer Tube Spec: Mil-Spec
$42
Currently Unavailable
LBE Unlimited Pistol Recoil Buffer Tube for AR-15 Lower Receivers - Stylish Red Anodized - PBTRED

LBE Unlimited

LBE Unlimited Pistol Recoil Buffer Tube for AR-15 Lower Receivers - Stylish Red Anodized - PBTRED

Buffer Tube Spec: Mil-Spec
Buffer Tube Type: Pistol
Color: Red
Finish: Hardcoat Anodized
$20
Currently Unavailable
LBE AR-15 Commercial Buffer Tube Kit

LBE Unlimited

LBE AR-15 Commercial Buffer Tube Kit

Buffer Tube Spec: Commercial
Buffer Tube Type: Carbine
Color: Black
Finish: Hardcoat Anodized
$50
Currently Unavailable
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Buffer Tube Assembly: most added in August 2026

The buffer tube assembly parts builders added most in August 2026, ranked from every build on GunPartPicker.

  1. 1.Geissele Automatics Premium Mil-Spec Buffer Tube Assembly With Super 42 H2 - DdcGeissele
  2. 2.Geissele Automatics Premium Mil-Spec Buffer Tube Assembly With Super 42 H3 - DdcGeissele
  3. 3.Geissele Automatics Premium Mil-Spec Buffer Tube Assembly With Super 42 H2 - BlackGeissele
  4. 4.Bravo Company Manufacturing Mil-Spec Carbine Stock Hardware KITBravo Company
  5. 5.Strike Industries 7075 T6 Aluminum AR Pistol Buffer Tube, Red - ARSPRESLICKREDStrike Industries

Updated · counts come from real builds on GunPartPicker

Not sure which buffer tube assembly to pick?

We analysed real builds to see what people actually run.

Read the full guide: AR-15 Buffer Tube Assembly Guide →

Prices checked · refreshed daily across 31 retailers