The CMMG AR-15 Receiver Detent 10-Pack (brand part no. 55AFF51) gives builders and armorers a ready supply of the small spring-loaded detents that keep pivot pins, takedown pins, and other critical points seated on a standard AR-15 lower. CMMG has built AR-platform rifles, pistols, and small parts for decades, and this pack reflects that same mil-spec attention to detail. Each detent is machined to fit factory-spec AR-15 lowers, making it a simple drop-in replacement for a lost or worn part during a build or field repair. Keep a set in the range bag or parts bin so a single missing detent never stalls a project.

Key Specifications

• 10 detents per pack gives you enough spares for multiple builds or repairs without reordering.
• Mil-spec pivot and takedown pin compatibility ensures a proper fit in standard AR-15 lower receivers.
• Built as a self-contained, spring-loaded detent, the same small part that keeps pivot and takedown pins seated under recoil.
• Made in the USA to consistent manufacturing standards.
• Backed by a lifetime guarantee so a defective detent is always covered.

Frequently Asked Questions

What does the CMMG AR-15 Receiver Detent 10-Pack include? Ten individual mil-spec AR-15 detents, the spring-loaded pins used at pivot pin, takedown pin, and other detent points on a standard AR-15 lower.

Will these detents fit any AR-15 lower? Yes, they are machined to mil-spec dimensions and fit standard AR-15 pattern lower receivers.

Buy the CMMG AR-15 Receiver Detent 10-Pack

Stock up on this small but essential piece of AR-15 hardware before you need it mid-build. Order the CMMG AR-15 Receiver Detent 10-Pack today, browse our full selection of AR takedown pins, and get fast, reliable shipping from our Lubbock, Texas gun shop.