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Armaspec Fire Selector Detent w/Spring ARM138-SS Color: Stainless, Fabric/Material: Stainless Steel, 25% Off and Blazin' Deal

Armaspec Fire Selector Detent w/Spring, SS, ARM138-SS
Armaspec Fire Selector Detent w/Spring, SS, ARM138-SS
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Armaspec Fire Selector Detent w/Spring, SS, ARM138-SS

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Questions & Answers
Does this work with AR-10? Manufacturer Answer

Yes this will work in the AR10 platforms.

by Armaspec Customer Service, Manufacturer, May 29, 2025
Will the SS Armaspec AR 15 Selector Detent and Spring fit S&W MP 15 Sport ll ? Expert Answer

Yes, the Armaspec AR 15 Selector Detent is compatible with the S&W M&P-15 Sport II rifle as well as most other AR15 and AR10 platform rifles.

by Ethan, Gear Expert, December 1, 2022
View All Q&A You Have a Question? Ask!
Customer Reviews
Most Recent Reviews
Armaspec makes great quality components but this one did not fit by scrlck, Verified Owner, August 19, 2026
I've bought and used many Armaspec AR15 products with great satisfaction, including springs, detents, bolt catch parts, end plates, take down pins, etc. This particular safety detent pin did not fit in the slot of the lower AR15 receiver because the...
Read More...
Most Recent Reviews
detent and spring by Lane Mckinney, Verified Owner, June 11, 2026
always good to have extra i guess, ordered these in a panic because i lost mine then managed to get it back.
Most Recent Reviews
Don’t Scrimp by Richard S, Verified Owner, March 25, 2026
Made in USA! Stainless steel, more resilient against corrosion. Don’t scrimp on these small parts when doing a build. All my builds (several) include these.
Most Recent Reviews
Good price by Adam, Verified Owner, March 17, 2026
Not bad, looks good but I was hoping it would fix the way my safety selector would feel but didn’t really make a change so I don’t think it’s the products fault
Most Recent Reviews
Pretty Stiff Spring by Ben Robbed, Verified Owner, March 2, 2026
Detent and spring were great quality, but spring is quite stiff and put quite a bit of pressure on the detent, making the safety selector pretty difficult to turn from safe to fire.
Most Recent Reviews
hardened pin by Nic, Verified Owner, February 8, 2026
Bought this to replace stock kit selector this is much harder, sturdier
Read All 16 Reviews

We've got an AWESOME deal for you!

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Blazin' Deal
Prices have been cut drastically on this product as part of a special offer. These prices are so low that there's no double-dipping with coupons or any additional discounts, but you'll still get the best deal out there. This offer won't last long, so don't miss out!
Color:
Stainless
Fabric/Material:
Stainless Steel

Code: AMS-DTN-ASSLDSTL-ARM138-SS

MPN: ARM138-SS

UPC: 810048491179

Blazin' Deal
List: $5.99Save 25%
$4.49
Purchase Restrictions Purchase Restrictions

made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

Product Info for Armaspec Fire Selector Detent w/Spring

While the safety selector on your AR 15 is important, it can't function properly without a high-quality detent. The Armaspec AR 15 Selector Detent is made from stainless steel, ensuring it remains in prime condition even after regular use. This prevents the safety selector from slipping to an unsafe mode before you are ready to fire, helping you stay safe when on the range.image

WARNING: California`s Proposition 65

Specifications for Armaspec Fire Selector Detent w/Spring:

Manufacturer: Armaspec
Color: Stainless
Fabric/Material: Stainless Steel
Country of Origin: USA

Features of Armaspec Fire Selector Detent w/Spring

  • Machined from quality corrosion resistant stainless steel

Package Contents:

  • Armaspec Fire Selector Detent w/Spring

Armaspec Fire Selector Detent w/Spring Orderable Models

List of Orderable Models

  • Armaspec Fire Selector Detent w/Spring, SS, ARM138-SS , MPN: ARM138-SS , UPC: 810048491179 , Code: AMS-DTN-ASSLDSTL-ARM138-SS
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Last updated 2026-09-10 UTC.