
Availability: In Stock
The JP Enterprises Enhanced Aluminum Receiver Extension Buffer Tube for AR-15/LR-308 carbines is a precision upgrade over standard mil-spec designs, built for shooters who want smoother cycling, quieter operation, and more position options on their modern sporting rifle. Built from 7075-T6 aluminum with hardcoat anodizing, this tube combines durability with a refined internal finish that reduces friction and wear on your buffer components—especially noticeable during extended range sessions or hunting trips where reliable cycling matters.
What sets the JP-SPEC buffer tube apart is the extra stock position: seven total positions instead of the standard six, giving you finer adjustment for cheek weld and shoulder fit across different shooting positions and gear configurations. The enhanced internal finishing isn't just a luxury—it quiets the action and means less wear on your bolt carrier and buffer spring over time. If you're running JP's Silent Captured Springs, this tube is optimized to accept deeper insertion into your lower receiver, maximizing that system's design benefits.
The exterior finish resists buttstock friction and maintains its appearance through heavy use, while the included lock ring and lock plate ensure rock-solid stability. Fully mil-spec compatible, it drops into any AR-15 or LR-308 lower receiver without modification, making it an easy bolt-on refinement whether you're building a precision carbine or upgrading an existing setup.
| Material | 7075-T6 Aluminum |
| Finish | Hardcoat Anodizing |
| Length | 7.25 inches |
| Weight | 3.9 oz (tube only) |
| Color | Black |
| Stock Positions | 7 |
| Compatibility | AR-15 and LR-308 Carbines (Mil-spec) |
| Included | Buffer tube, lock ring, lock plate |
Yes. The JP Enterprises Enhanced Aluminum Receiver Extension is fully mil-spec compatible and will fit any standard AR-15 or LR-308 lower receiver without modification.
This tube is specifically optimized for JP Silent Captured Springs. It's designed to allow deeper insertion into your receiver, which optimizes the protrusion needed for that system to function at its best.
The package includes the buffer tube itself, a buffer tube lock ring, and a lock plate to ensure secure attachment to your lower receiver.
This JP-SPEC tube offers one additional stock position compared to standard mil-spec six-position designs, giving you finer adjustments for cheek weld and shoulder fit across different shooting positions and equipment configurations.

SKU: 115788940 • Weight: 0.34oz





Availability: In Stock
The JP Enterprises Enhanced Aluminum Receiver Extension Buffer Tube for AR-15/LR-308 carbines is a precision upgrade over standard mil-spec designs, built for shooters who want smoother cycling, quieter operation, and more position options on their modern sporting rifle. Built from 7075-T6 aluminum with hardcoat anodizing, this tube combines durability with a refined internal finish that reduces friction and wear on your buffer components—especially noticeable during extended range sessions or hunting trips where reliable cycling matters.
What sets the JP-SPEC buffer tube apart is the extra stock position: seven total positions instead of the standard six, giving you finer adjustment for cheek weld and shoulder fit across different shooting positions and gear configurations. The enhanced internal finishing isn't just a luxury—it quiets the action and means less wear on your bolt carrier and buffer spring over time. If you're running JP's Silent Captured Springs, this tube is optimized to accept deeper insertion into your lower receiver, maximizing that system's design benefits.
The exterior finish resists buttstock friction and maintains its appearance through heavy use, while the included lock ring and lock plate ensure rock-solid stability. Fully mil-spec compatible, it drops into any AR-15 or LR-308 lower receiver without modification, making it an easy bolt-on refinement whether you're building a precision carbine or upgrading an existing setup.
| Material | 7075-T6 Aluminum |
| Finish | Hardcoat Anodizing |
| Length | 7.25 inches |
| Weight | 3.9 oz (tube only) |
| Color | Black |
| Stock Positions | 7 |
| Compatibility | AR-15 and LR-308 Carbines (Mil-spec) |
| Included | Buffer tube, lock ring, lock plate |
Yes. The JP Enterprises Enhanced Aluminum Receiver Extension is fully mil-spec compatible and will fit any standard AR-15 or LR-308 lower receiver without modification.
This tube is specifically optimized for JP Silent Captured Springs. It's designed to allow deeper insertion into your receiver, which optimizes the protrusion needed for that system to function at its best.
The package includes the buffer tube itself, a buffer tube lock ring, and a lock plate to ensure secure attachment to your lower receiver.
This JP-SPEC tube offers one additional stock position compared to standard mil-spec six-position designs, giving you finer adjustments for cheek weld and shoulder fit across different shooting positions and equipment configurations.
SKU: 115788940 • Weight: 0.34oz
