CMMG AR-15 C-Clip — 1/8" | Small Parts Retaining Clip | Mil-Spec Build Hardware | SKU 55BA553 | UPC 810046232200
Small part, big reliability. The CMMG AR-15 C-Clip (1/8") is a compact retaining clip engineered to secure small pins, shafts, and subcomponents in your AR-15 platform. Whether you’re finishing a lower, refreshing a worn rifle, or stocking your armorer’s bench, this precision-formed 1/8" C-clip delivers the fit, bite, and corrosion resistance you need for long-term durability under recoil, vibration, and field abuse.
Brand: CMMG
Product: AR-15 C-Clip (1/8")
Function: Retaining clip for small pins/shafts on AR-15 builds
Material: Hardened spring steel (corrosion-resistant finish)
SKU: 55BA553
UPC: 810046232200
Why the CMMG 1/8" C-Clip Belongs in Your Build Kit
Secure Retention for Small Parts
The spring-steel C-profile snaps firmly into the groove on a 1/8" shaft or pin, helping prevent walk-out under recoil, sling pressure, or rough handling.
Mil-Spec Friendly Tolerances
Built to tight specs for repeatable engagement—ideal for new builds, duty rifles, and high-round-count training guns.
Corrosion-Resistant Finish
Resists moisture, solvents, sweat, and carbon, maintaining spring tension and bite over long service intervals.
Low-Cost, High-Value Reliability
A few cents of insurance against downtime. Keep a handful in your parts tray and never postpone a range day for lack of a tiny but critical clip.
Armorer-Grade Versatility
Useful across the rifle for small-shaft retention scenarios—great for shops, clubs, and departments that maintain multiple rifles.
Ideal Use Cases
New AR-15 Builds: Ensure proper retention where a 1/8" C-clip is specified or recommended.
Maintenance & Refresh: Replace bent, fatigued, or rusty clips during detailed cleanings.
Spare Parts Kits: Add to your field repair kit, armorer roll, or bench stock for emergency fixes.
Note: Always verify your platform’s parts diagram. Use only where a 1/8" C-clip is specified by the assembly instructions.
Installation (Quick Guide)
Unload & Clear the firearm.
Inspect the Groove: Confirm the 1/8" shaft or pin has a clean, square groove for the clip.
Seat the Clip: Using snap-ring/C-clip pliers or a flat-blade support, expand gently and seat the clip into the groove.
Confirm Engagement: Ensure the clip fully snaps into place—no wobble, no partial seating.
Function Check: Cycle the mechanism to verify free movement without the clip binding adjacent parts.
Pro Tip: Replace C-clips that show any signs of deformation. Over-expansion reduces spring tension and can compromise retention.
Compatibility Notes
Platform: Designed for AR-15 pattern rifles where a 1/8" retaining clip is applicable.
Materials: Works with typical steel pins/shafts that include a machined groove sized for 1/8" C-clips.
Do Not Substitute: Never interchange sizes (e.g., 3/32" or 5/32")—use the correct 1/8" clip for a positive lock-up.
Key Features at a Glance
1/8" C-clip for AR-15 small parts retention
Spring-steel construction with corrosion-resistant finish
Positive snap engagement in properly cut grooves
Mil-spec friendly tolerances for repeatable fit
SKU/UPC: 55BA553 / 810046232200
Frequently Asked Questions
Q: Can I reuse a C-clip?
A: Sometimes, but if a clip has been over-expanded, bent, or shows corrosion, replace it. Fresh clips preserve spring tension and reliability.
Q: Do I need special tools?
A: Snap-ring/C-clip pliers help with controlled expansion and placement. In a pinch, careful use of small flat tools can work—avoid over-stretching.
Q: Will this fit AR-10/.308 rifles?
A: Many large-frame rifles share similar small parts, but specifications vary. Confirm your platform’s manual and use the part size it calls out.
Q: Is threadlocker required?
A: No—C-clips rely on spring tension in the groove. Ensure the groove is clean and the clip is fully seated.
Best Practices for Armorers & Builders
Stock multiples: Keep a 10-pack or more on hand; tiny clips like these are easy to misplace during assembly.
Inspect grooves: Burrs or fouling can prevent a full seat—stone lightly or clean before installation.
Log replacements: Note the replacement date in your build sheet to track maintenance cycles.
Wear eye protection: Spring steel can snap—always protect your eyes when installing or removing clips.
Technical Specs (Summary)
Type: Retaining C-clip
Size: 1/8"
Material: Hardened spring steel
Finish: Corrosion-resistant
Platform: AR-15 (as specified)
SKU: 55BA553
UPC: 810046232200
SEO Highlights (Naturally Woven)
CMMG AR-15 C-Clip 1/8", small parts retaining clip for AR builds, spring-steel snap clip, corrosion-resistant finish, mil-spec friendly tolerances, armorer spare part, SKU 55BA553, UPC 810046232200.
Meta for Your Product Page
Meta Title: CMMG AR-15 C-Clip — 1/8" Retaining Clip | 55BA553
Meta Description: Keep your AR running with the CMMG 1/8" C-Clip. Spring-steel retention, corrosion-resistant finish, and mil-spec fit for reliable small-parts security. SKU 55BA553 — UPC 810046232200.
From the bench to the backcountry, the CMMG AR-15 C-Clip (1/8") is the tiny part that makes a big difference—locking small components in place so your rifle stays ready when it matters.
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