$12.99
18 in stock
Online inventory may differ from in-store availability.
Quick turnaround so you get your gear sooner.
Trusted checkout with industry-standard protection.
Keeping Traditions Alive Since 1953
Secure Transactions provided with 
Anyone who's built or torn down an AR-15 upper knows the drill: one of those tiny springs or detents pings off the bench and disappears into the void, and suddenly your project is on hold. This CMMG Upper Pins & Springs Kit fixes that headache by bundling all the small upper receiver hardware into a single package, so you've got the right piece on hand instead of tearing the shop apart looking for it.
Inside you get a front sight detent, front sight spring, forward assist spring, extractor spring with buffer, extractor, extractor pin, ejector, ejector/selector spring, and ejector pin. That's the full set of the fiddly bits that live in and around a standard AR-15 upper and bolt carrier group. Every part is made to meet or exceed Mil-Spec, so fit and function line up with standard AR-15, M16, and M4 pattern uppers without any fitting or guesswork.
CMMG has been turning out AR components and complete rifles for years, and they know these small parts wear out or wander off more than any other piece on the gun. Extractor springs lose tension, detents get lost during handguard swaps, and ejector springs eventually soften up. Having this kit in the drawer means a five minute fix instead of a shipping delay, which is exactly why armorers and home builders keep a couple on the shelf.
This is a maintenance and assembly kit, not a complete upper build, so it pairs well with a stripped or partial upper you're finishing up. It's also a smart grab-and-go item for range bags and travel cases, since the extractor spring and small detents are the parts most likely to strand you mid-day. Steel construction keeps everything durable, and the Mil-Spec sizing means it drops right in wherever a standard AR-15 spec part belongs.
It comes with a front sight detent, front sight spring, forward assist spring, extractor spring with buffer, extractor, extractor pin, ejector, ejector/selector spring, and ejector pin. That covers the small pins and springs found in and around a standard AR-15 upper receiver and bolt carrier group. It's meant for repairs, spares, or finishing an upper assembly.
Yes, the parts are made to meet or exceed Mil-Spec, so they fit standard AR-15, M16, and M4 pattern uppers. As long as your rifle uses standard spec components, these drop right in without fitting. Non-standard or proprietary uppers may use different sizing, so it's worth confirming your platform is Mil-Spec first.
No, this is a small parts kit focused on the pins and springs, not a full upper with a barrel, handguard, or bolt carrier group. Think of it as the hardware that finishes an assembly or replaces worn and lost pieces. It pairs well with a stripped or partially built upper you're wrapping up.
The extractor spring, detents, and ejector spring are the parts most likely to wear out or go flying during a build or cleaning. Having this kit in the drawer means you can make a quick fix instead of waiting on a shipment. It's a popular grab for armorers, home builders, and anyone who stocks spares.
| UPC | 815835011981 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 55AFF2F |
| Caliber/Gauge | AR-15/M16/M4 Standard Handguard |
| Color | UPPER PINS/SPRINGS |
| Length | 4.5500 |
| Model | |
| Product Type | Kit |
You must be logged in to post a review.
Reviews
There are no reviews yet.