Parts

[Maggot]

Looks like there could be some turmoil with 'Black rifles' once PedoJoe gets in, if he does. What are the parts of an AR15 that you MUST have replacements for?

 

[Broncovan]

LPKs
Bolts

 

[HKpirate]

Springs, lots of odds and ends springs. LPK's, bolt service kits, mag followers.

 

[LRRPF52]

Ejector spring (there’s a spare in your pistol grip that drives the selector detent in TDP guns)
Extractor spring
Action spring
Gas rings
Carrier key fasteners
Gas tubes (flange gets worn out, causes short-stroking)
Bolts
Firing pins
Cam pins
Gas tube roll pin for replacement
Hammers
Hammer springs
Disconnectors
Disconnector springs
Hammer pins
Barrels

You see it more in compressed high volume.

Cheap uppers will sometimes wear out at the charge handle latch recess, causing charge handle nose-slap.

 

[Amanda4461]

My go-to spare is an extra complete rifle or three. Can’t buy just one

 

[darkfader]

My go-to spare is an extra complete rifle or three. Can’t buy just one

This is a philosophy I can get behind. I think I have some kind of an AR disease. Every time I get an extra part, it ends up turning into a complete rifle. And then I’m out of extra parts again. It’s a vicious cycle.

 

[nightman89]

My go-to spare is an extra complete rifle or three. Can’t buy just one

Yup. By the time you finish getting all the spare parts you need, might as well put them all together into a new rifle.

I would say if you wanted to keep it simple, get a spare BCG and LPK (with trigger). You can go down the rabbit hole thinking through everything that might break, but at that point just get another rifle.

 

[Blutroop]

2 is 1. 1 is none

 

[1moaoff]

My go-to spare is an extra complete rifle or three. Can’t buy just one

My kind of woman!

 

[Slevin182]

2 is 1. 1 is none

YYEEESSSS

 

[S197]

Anyone needing a bcg, this is a fair deal.

Micro-Best AR-15 CHROME Bolt Carrier Group | PK Firearms

The Micro Best AR-15 chrome bolt carrier group is machined from 8620 carbon steel, that is heat treated. Exterior of carrier is chromed and interior is chrome-lined. Uses a Mil-Spec gas key that is chromed on the exterior, chrome-lined on the interior, heat treated and secured to the carrier...

pkfirearms.com