I was a platoon and company grade armorer for 4 years. Your AR’s need new springs from time to time. These are cheap fixes. And you should have spares; When was the last time you replaced these parts? Too ease your mind, your trigger springs don’t go bad in my experience. I only saw two gas keys on the bolt carrier group go bad. Never saw a proper MPI bolt break.

Own a couple carbines? Remove the buffer springs and let me know if they are the same length… Bet you money they are not…

Let’s begin…

For Buffer Springs.  https://sprinco.com/ar-buffer.html

These Buffer Springs are constructed from the same high-grade material used in NASCAR racing engine valve springs, which experience over 1 million compression cycles in a single race. Proprietary post-winding treatments result in superior performance.

FOLLOW COLOR CODE DIRECTIONS. DON’T REINVENT THE WHEEL. YOU AREN’T AN ENGINEER… THEY ALREADY TESTED ALL OF THIS!

Rebuilding your Bolt… 

The following is in case you loose anything, or wear out: your extractor, extractor spring, the retainer pin, or burn up your inserts. You, and your buddies, need spares ON your rifle kits. When was the last time you replaced these parts? Do you use steel case ammo? Do you have any spares that aren’t already on complete firing rifles?

Extractor: https://www.brownells.com/rifle-parts/bolt-parts/extractor-parts/extractors/ar-15-extractor-only-prod140750.aspx?avs%7cMake_3=AR-15

Enhanced Extractor Spring: https://www.brownells.com/rifle-parts/bolt-parts/extractor-parts/extractor-springs/heavy-duty-extractor-spring-sku100004041-26996-52810.aspx

Extractor Spring Insert: https://www.brownells.com/rifle-parts/bolt-parts/extractor-parts/extractor-hardware/ar-15-extractor-spring-insert-prod140753.aspx?avs%7cMake_3=AR-15

Extractor Spring O-rings: https://www.brownells.com/rifle-parts/bolt-parts/extractor-parts/extractor-hardware/ar-15-extractor-spring-o-ring-sku100040955-140752-250106.aspx

Extractor Retainer Pin: https://www.brownells.com/rifle-parts/bolt-parts/extractor-parts/extractor-hardware/ar-15-extractor-pin-sku100040958-140755-250109.aspx

Bravo Company Complete Combo Kit: https://www.brownells.com/rifle-parts/bolt-parts/extractor-parts/extractors/ar-15-sopmod-bolt-upgrade-rebuild-kit-prod133592.aspx?avs%7cMake_3=AR-15

 

The Firing Pin and Firing Pin Retainer Pin gets lost in the field very easily…

Firing Pin Retainer Pin: https://www.brownells.com/rifle-parts/bolt-parts/firing-pin-parts/firing-pin-retainers/ar15a4-firing-pin-retaining-pin-sku160304001-4827-10805.aspx

Firing Pin: https://www.brownells.com/rifle-parts/bolt-parts/firing-pin-parts/firing-pins/ar15a4-firing-pin-prod4828.aspx?avs%7cMake_3=AR-15

 

Wild Springs Go BOING! into the woodline…

Own Four Rifles? Buy Four Kits…

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