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Questions & Answers
Will it work on a adams arms ar 15 Expert Answer

Yes, the Phase 5 Weapon Systems Inc Pistol Buffer Tube will fit Milspec AR15 receivers and function as intended. It is Compatible with SB Tactical Braces that accept round tubes. (OD: 1.25").

by Ethan, Gear Expert, November 10, 2022
Will it fit arp 7.5 Expert Answer

The Phase 5 Weapon Systems Inc Pistol Buffer Tube will fit any Mil-spec AR15 receiver. It features an outside diameter of 1.25" making it compatible with SB Tactical braces that accept round tubes.

by Ethan, Gear Expert, October 4, 2022

Product Discontinued by Manufacturer

Phase 5 Weapon Systems Inc Pistol Buffer Tube AR15 has been discontinued by Phase 5 Weapon Systems Inc and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Lower Parts, AR15 Buffer Tubes yourself to try and find the perfect replacement for you!

Product Info for Phase 5 Weapon Systems Inc Pistol Buffer Tube AR15

Customize your AR-15 for the perfect shot with a Phase 5 Weapon Systems Inc Pistol Buffer Tube AR15. Each of these AR15 Lower Parts by Phase 5 Weapon Systems Inc are CNC-machined from 7075 T651 billet aluminum for a strong yet lightweight platform that's resistant to wear and tear, adding years to your build. This Phase 5 Weapon Systems Inc AR-15 Pistol Buffer Tube for Rifles also contains a machined lower slot that accepts Mil-Spec end plates and other accessories. By simply replacing your existing PBT with this one, you can customize your gun grip to make it the perfect fit for your shooting style. Take your pistol to the range or on a tactical mission while using this Phase 5 Weapon Systems Inc Pistol Buffer Tube w/ Castle Nut and Spring.image

Features of Phase 5 Weapon Systems Inc Pistol Buffer Tube AR15

  • Overall diameter: 1.25
  • CNC-machined 7075 T651 billet aluminum Pistol buffer tube
  • Hard-anodized Mil-Spec type III black finish
  • Machined lower slot

Package Contents:

  • Phase 5 Weapon Systems Inc Pistol Buffer Tube AR15
  • Castle Nut End Plate and Foam Pad

Gun Parts and Accessories

130 / 30
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Gun Triggers

115 / 15
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Gunsmithing Tools & Accessories

115 / 15
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Phase 5 Weapon Systems Inc Pistol Buffer Tube AR15 Accessories

112 / 12

Magazine and Accessories

121 / 21
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Gun Sights

119 / 19
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Gun Stocks

117 / 17
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Mounts, Rings and Accessories

119 / 19
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Phase 5 Weapon Systems Inc Pistol Buffer Tube AR15 Unavailable & Discontinued Models

List of Unorderable Models

  • Phase 5 Weapon Systems Inc Pistol Buffer Tube AR15, Blue, Medium, PBT-BLUE , MPN: PBT-BLUE , UPC: 813318023834 , Code: 1U8-RBT-PH5WS33-PBT-BLUE
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Last updated 2026-09-05 UTC.