TacFire AR-15 Buffer Detent Pin with Spring — USA Made, Stainless Steel | Premium Buffer Retainer Kit for Mil-Spec Lowers (SKU MAR086-SS | UPC 811261028241)
Upgrade the tiny part that protects your whole recoil system. The TacFire AR-15 Buffer Detent Pin with Spring — Stainless Steel (MAR086-SS) is a USA-made small-parts kit engineered for precise buffer retention, smooth takedown, and long service life. Machined from stainless steel and paired with a quality-tension spring, this drop-in detent resists corrosion, maintains reliable capture of the buffer/BCG, and keeps field stripping clean and controlled—range day after range day.
Whether you’re finishing a new lower, refreshing a trusted carbine, or stocking an armorer’s tray, choose the stainless upgrade that stands up to weather, solvents, and hard use.
Why Choose the Stainless MAR086-SS?
Corrosion-resistant stainless steel: Ideal for humid climates, rainy hunts, truck guns, and rifles that see frequent cleaning solvents.
USA made quality: Built to consistent dimensions for true mil-spec fit and reliable, repeatable performance.
Secure buffer capture: Correct detent height and spring rate help retain the buffer during takedown—no surprise launches or fumbling reassembly.
Smooth maintenance: Makes pivot-open cleaning faster, cleaner, and safer for your recoil components.
Perfect for builds & spares: A low-cost, high-value reliability upgrade for any AR-15 bench kit.
Key Features at a Glance
Component: Buffer detent pin (stainless steel) + detent spring
Platform: AR-15 pattern lowers (mil-spec style)
Function: Retains buffer/bolt carrier during takedown; supports consistent reassembly
Material: Stainless steel detent; quality steel spring engineered for long-term elasticity
Finish/Color: Natural stainless (won’t rust or flake; easy to inspect)
Country of Origin: USA Made
Model / SKU: MAR086-SS
UPC: 811261028241
Compatibility: Works with most AR-15 mil-spec lowers using standard buffer retainers—carbine and rifle-length systems (A2/A1 or collapsible). Not intended for proprietary receivers that omit a buffer retainer by design.
Built for Real-World Reliability
True geometry: Precisely machined detent face contacts the buffer consistently, minimizing wear and preventing erratic release.
Spring you can trust: Tuned tension resists taking a set, preserving capture strength across high round counts.
Weather-proof choice: Stainless detent helps prevent hidden corrosion inside the receiver extension area.
Ideal Use Cases
New lower builds where you want every small part to be premium and USA made
Refurb/refresh when older springs feel weak or detents show peening
Armorer kits to rescue a class or match day with a quick, proven fix
Duty/defense rifles where corrosion resistance and predictable maintenance matter
Installation Overview (Best Practices)
Unload & clear the firearm; verify chamber and magazine are empty.
Drop the spring into the buffer retainer recess on the lower receiver.
Place the stainless detent on the spring and compress carefully.
Thread in the receiver extension (buffer tube) until it captures the detent shoulder—do not overrun.
Press the detent to confirm free movement and proper buffer capture before live fire.
Tip: Use a non-marring punch to control the spring during installation—small parts love to launch. Follow manufacturer torque specs for your receiver extension and end plate.
Specifications (Quick Reference)
Platform: AR-15 (mil-spec lowers)
System Support: Carbine and Rifle buffer systems
Detent Material: Stainless steel
Spring: Quality-tension steel spring
Includes: (1) Buffer Detent Pin, (1) Detent Spring
Model/SKU: MAR086-SS
UPC: 811261028241
Origin: USA Made
Care & Maintenance
Keep clean: Wipe carbon from the buffer face and detent channel during routine service.
Light lube: A micro-drop of oil prevents galling; avoid over-lubrication that attracts grit.
Inspect annually: Replace if movement feels gritty, the spring weakens, or the detent face shows deformation.
FAQs
Q: Will this fit my AR-10/.308 pattern lower?
A: This kit is sized for AR-15 lowers. Some .308/AR-10 receivers use different specs—verify before ordering.
Q: Is the spring included?
A: Yes—MAR086-SS includes both the stainless detent pin and the detent spring.
Q: Why stainless over standard carbon steel?
A: Stainless resists rust and chemical corrosion better—great for duty guns, wet climates, and frequent cleaning routines.
Q: Do I need special tools?
A: No specialty tools are required, but a bench block and non-marring punch make installation easier (and safer for small parts).
SEO-Friendly Highlights (Naturally Woven)
TacFire AR-15 buffer detent pin with spring, stainless steel buffer retainer, USA made AR-15 small parts, mil-spec buffer detent kit, corrosion-resistant AR detent, MAR086-SS, UPC 811261028241, AR-15 lower parts upgrade, carbine/rifle buffer system compatible.
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Meta Title: TacFire AR-15 Buffer Detent Pin with Spring — USA Made Stainless | MAR086-SS
Meta Description: Upgrade reliability with the TacFire AR-15 Buffer Detent Pin & Spring (USA Made, Stainless Steel). Mil-spec fit for carbine & rifle systems. SKU MAR086-SS — UPC 811261028241.
Small part, big reliability—lock down your buffer system with the TacFire AR-15 Buffer Detent Pin with Spring, USA Made Stainless (MAR086-SS) and keep every takedown smooth, secure, and corrosion-free.
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