LBE Unlimited Pistol Buffer Tube Assembly Kit - AR-15 / AR-308 Pistol Receiver Extension System, Precision CNC-Machined T6 Aluminum Tube, Standard Recoil Buffer, Heavy-Duty Spring, Foam Sleeve, Castle Nut & Latch Plate, Anodized Red Finish - PBUFKT-RED / 706612407724
Product Description
Assembling a custom AR pistol platform requires a precise, reliable recoil extension setup that provides smooth bolt carrier group cycling while adding custom visual style. Standard or out-of-spec receiver extensions can cause bolt drag, internal wall battering, and irregular cycling on your bench. The **LBE Unlimited Pistol Buffer Kit (PBUFKT-RED / 706612407724)** flatlines these cycling and aesthetic bottlenecks, delivering a complete, factory-calibrated extension assembly housed in a CNC-machined **T6 aluminum pistol tube** with a vibrant anodized red finish.
Engineered and manufactured in the USA by LBE Unlimited, the PBUFKT-RED kit contains every necessary component to complete the lower receiver tail assembly on your AR-15 or AR-308 pistol build. The round pistol buffer tube features a smooth outer profile designed for non-telescoping receiver setups, paired with a high-density foam sleeve for enhanced cheek weld comfort and cheek rest positioning during target transitions. Complete with a standard 3 oz pistol recoil buffer, a heat-treated recoil spring, a steel castle nut, and a receiver end plate, this kit delivers factory-grade dwell timing and cycling performance directly from your armorer bench.
Engineered to thread natively into all mil-spec forged and billet AR-15 / AR-10 / LR-308 lower receivers, this complete red pistol buffer kit guarantees smooth bolt carrier group travel and reliable cycling performance directly from your workspace bench.
*Armorer Bench Notes & Real-World Receiver Staging Guidance: The LBE Unlimited PBUFKT-RED kit arrives workspace ready with all required buffer tail assembly components. LOWER RECEIVER & BCG COMPATIBILITY MATRIX: Engineered specifically for **AR-15, AR-308, and Pistol Caliber Carbine (PCC) lower receivers** stripped for pistol buffer extension tubes. *Thread Checklist:* Features standard 1-3/16"-16 UN threads compatible with all mil-spec AR lower receiver threads. Armorer Workbench Custom Staging Sequence: 1. Visually and physically confirm your lower receiver build is clear of live ammunition and components on your bench. 2. Slide the receiver end plate and castle nut onto the threaded red pistol buffer tube. 3. Thread the tube into the rear of the lower receiver until it catches the buffer retainer pin and spring. 4. Torque the castle nut to 38-40 ft-lbs using an armorer's wrench, then stake the end plate into the castle nut notch with a center punch. 5. Slide the protective foam sleeve over the rear of the tube, then insert the recoil spring and 3 oz buffer into the tube before testing BCG travel.*
Key Features
- Complete Pistol Buffer Assembly Kit: Includes anodized red pistol buffer tube, high-density foam sleeve, 3 oz recoil buffer, heavy-duty recoil spring, steel castle nut, and receiver end plate.
- Precision CNC-Machined T6 Aluminum: Constructed from high-strength aircraft-grade T6 aluminum for lightweight structural durability and impact resistance.
- Custom Anodized Red Finish: Brilliant Type II anodized red coating provides striking custom aesthetic appeal alongside superior corrosion resistance.
- Comfort Foam Sleeve Included: Removable dense foam sleeve provides enhanced cheek weld comfort and shields the tube from surface wear.
- Mil-Spec Standard Thread Pitch: Uses standard 1-3/16"-16 UN threads for universal installation on all mil-spec AR-15 and AR-308 lower receivers.
- Factory Dwell & Recoil Calibration: Standard 3 oz buffer and tuned spring combination provides consistent bolt carrier group velocity and last-round lockup.
Product Specifications
- Brand: LBE Unlimited (United States / American Made Tactical Gear)
- Model Line: Complete AR Pistol Receiver Extension Kit
- MPN/SKU Code: PBUFKT-RED (LBE Pistol Buffer Kit Red SKU)
- UPC Code Profile: 706612407724
- Firearm Platform Compatibility: AR-15, AR-10, LR-308, AR-9 Pistol Builds
- Tube Material Base: CNC-Machined Heavy-Duty T6 Aircraft Aluminum
- Exterior Finish Coating: Anodized Vibrant Red Protective Finish
- Buffer Spec & Weight: Standard 3.0 oz AR Pistol Recoil Buffer
- Spring Material Spec: Heavy-Duty Heat-Treated Carbon/Music Wire Recoil Spring
- Thread Standard Pitch: 1-3/16"-16 UN Mil-Spec Lower Thread Pattern
- Full Kit Component Checklist: 1x Red Pistol Buffer Tube, 1x Foam Sleeve, 1x Recoil Buffer, 1x Recoil Spring, 1x Castle Nut, 1x Receiver End Plate
- Packaging Format Class: Factory Original Sealed LBE Retail Packaging
- Product Type Category: AR-15 Lower Receiver Components / Pistol Buffer Kits
- Net Component Mass: ~9.10 Ounces (~258.0 Grams Complete Kit Mass)
- Global Quality Certifications: Formulated to Rigid US Mil-Spec Dimensions & Tolerances
- Warranty Tracking Protection: Fully Backed by LBE Unlimited Factory Limited Warranty
