Phase 5 Weapon Systems — Carbine Enhanced Pistol Buffer Spring (PBS) — AR-Pistol / Carbine Platform — UPC 813318020390
Meta (SEO) short description: Upgrade cycling and durability with the Phase 5 Weapon Systems Enhanced Pistol Buffer Spring (PBS). A heat-treated, corrosion-resistant, extra-power spring engineered for AR-pistol and carbine applications. UPC 813318020390.
Product Overview
The Phase 5 PBS (Carbine Enhanced Pistol Buffer Spring) is a purpose-built replacement spring designed to give AR-pistol and carbine builds a more consistent, durable, and robust buffer system. Made for shooters who demand reliable cycling from short-gas and pistol-length systems, the PBS provides extra power and longevity compared with standard replacement springs—helping to smooth extraction, improve timing, and resist premature sagging during heavy use. Phase5 WSI
Key Features & Benefits
Enhanced power & consistency: The PBS is an “extra power” buffer spring that offers stronger spring force than standard mil-spec springs, improving the repeatability of the bolt carrier’s return stroke in pistol-length or carbine configurations. GrabAGun
Heat-treated, corrosion-resistant steel: Constructed from specially treated spring steel to resist corrosion and maintain tension over extended use, increasing service life and lowering the need for frequent replacement. Palmetto State Armory
Optimized for pistol & carbine systems: Specifically labeled for AR-pistol applications but also suitable for standard carbine gas systems where a slightly stiffer spring improves cycling reliability. Impact Guns
Made in the USA: Manufactured to Phase 5’s quality standards, offering the traceability and build quality shooters expect from an American parts supplier. Impact Guns
Specifications (at-a-glance)
Model / Part: PBS — Phase 5 Carbine Enhanced Pistol Buffer Spring.
UPC / Barcode: 813318020390. Hinterland Outfitters
Material: Heat-treated spring steel, corrosion-resistant finish. Palmetto State Armory
Intended use: AR-15 / M16 pistol and carbine platforms (.223/5.56 and like calibers). GrabAGun
Who Should Install the PBS
AR-pistol builders: If you run a pistol-length gas system, suppressed builds, or a brace configuration, the PBS helps ensure reliable cycling where a standard spring sometimes lacks the return energy needed. GrabAGun
Carbine shooters seeking reliability: Users who want slightly stiffer rebound and longer spring life for high-round-count applications. battlehawkarmory.com
General upgrade path: Anyone swapping out an old or fatigued buffer spring as a low-cost, high-impact reliability upgrade.
Performance Notes & Installation Guidance
Cycling & timing: The extra power of the PBS can improve ejection and bolt-carrier timing in builds with shorter gas systems or suppressed barrels; however, because it increases rearward force, pairing with the correct buffer weight and buffer tube setup is recommended to maintain optimal dwell and dwell timing. Cheaper Than Dirt
Installation: Install like any AR buffer spring—compress into the receiver extension or buffer tube, seat the buffer, and verify smooth movement. If you’re unsure about buffer weight selection for your specific caliber or suppressed configuration, consult a qualified armorer or Phase 5 fitment guidance. Cheaper Than Dirt
Break-in & maintenance: A short break-in period is normal. Inspect the spring periodically for signs of flattening, corrosion, or loss of tension and replace when wear is visible to preserve reliable function. Palmetto State Armory
Why Choose Phase 5’s Enhanced Spring
Phase 5 Weapon Systems has a reputation for practical, billet-quality AR components. The PBS represents a simple, low-cost parts swap that can noticeably improve function—especially in AR-pistol or short-gas setups where standard springs sometimes underperform. Its heat-treated, corrosion-resistant construction and “extra power” profile make it a go-to replacement for shooters chasing reliability and longevity from an otherwise overlooked wear item. Phase5 WSI+1
Ordering & Identification
When searching or ordering, reference PBS (Phase 5) and UPC 813318020390 to ensure you receive the correct enhanced pistol/carbine buffer spring. Many retailers and parts stores list the product under Phase 5’s PBS SKU—prices vary by vendor and availability. Hinterland Outfitters
SEO-Optimized Closing Paragraph
The Phase 5 Weapon Systems Carbine Enhanced Pistol Buffer Spring (PBS) is a must-have upgrade for AR-pistol and carbine builders who want improved cycling, longer spring life, and corrosion resistance. Engineered as an extra-power replacement, the PBS offers a straightforward reliability boost—especially for short gas systems, suppressed setups, and high-round-count users. Search UPC 813318020390 or part PBS to find this affordable, American-made buffer spring and give your AR platform the dependable return stroke it deserves. Phase5 WSI+1
The End
