Description

The AR15/M4 Takedown and Pivot Pin Detent is a vital small part that plays a big role in the function of your rifle. This precision-machined detent retains the front and rear takedown pins securely in place, ensuring your upper and lower receivers stay properly aligned. Made to exact MIL-SPEC dimensions, it fits all standard AR15 and M4-style lowers and is ideal for both new builds and repair jobs.

Built from high-strength steel and finished for corrosion resistance, this detent delivers reliable performance in any condition—making it a must-have for builders, armorers, and anyone who wants to keep their rifle in top shape.

Key Features:

MIL-SPEC compatible with AR15 and M4 platforms
Precision-machined for perfect fit and reliable retention
Durable steel construction for long service life
Black oxide or phosphate finish for corrosion protection
Ideal for new builds, repairs, and spare parts kits

Applications:

Lower receiver assembly for AR15/M4 builds
Replacement for damaged or lost detents
Armorer kits and bench stock replenishment
Routine maintenance and rifle servicing
Compatible with most MIL-SPEC lower receivers

Reasons to Buy:

Essential for receiver function – secures takedown and pivot pins
High-quality material built to last under repeated use
Perfect spare to keep on hand for quick fixes or builds
Universal compatibility with most standard AR lowers
Cost-effective upgrade or replacement part

Customer Reviews:

⭐⭐⭐⭐⭐ “This is one of those tiny parts that can ruin your day if you lose it. Works great, perfect fit.” — Ryan K.
⭐⭐⭐⭐⭐ “I always keep a couple of these in my parts box. Inexpensive insurance for every build.” — Jeff S.
⭐⭐⭐⭐⭐ “High quality and easy install. Exactly what I needed for my lower refresh.” — Brian M.