The TacFire MAR139C Short Buffer Tube System is a compact 3.5" buffer assembly designed specifically for AR pistol platforms. Built from durable aluminum with a black anodized finish, this kit includes the buffer tube, spring, guide rod assembly, bolt carrier insert, castle nut, end cap, and QD sling end plate to deliver a complete, short-length solution for pistol builds.

Ideal for shooters looking to trim overall length for a backpack-ready or highly compact AR pistol, the MAR139C installs with basic tools and integrates with standard AR components. Its shortened design helps maintain reliable cycling while improving handling in tight spaces and during range sessions or training. TacFire’s attention to practical design and solid construction makes this buffer system a dependable upgrade for modern AR pistol projects.

Key Features:

• Manufacturer: TacFire
• Model: MAR139C Short Buffer Tube System
• Type: Buffer Tube System
• Material: Aluminum
• Finish: Black Anodized
• Length: 3.5" short buffer system
• Compatibility: AR Pistol Platform / AR-15 receivers
• Included Components: Buffer tube, spring, guide rod assembly, bolt carrier insert, castle nut, end cap, QD end plate