View Full Version : Which part of AR need replacing as you use it.

09-03-2010, 8:30 PM
I want to know as you use your AR not as in going to war, but just casual shoot on the weekend ranges. Which part of your AR generally goes bad first and need replacing and which parts tend to go back 2nd etc....

I know most of the AR owner won't have to worry about this, but if you do shoot a lot, what happens.

09-03-2010, 8:34 PM

09-03-2010, 8:57 PM

09-03-2010, 9:26 PM
Spare bolt/bolt carrier group is a good idea.

09-03-2010, 10:41 PM
Nothing really unless it is defective or not taken care off. All the important pieces are steel mostly.

Rally Dave
09-03-2010, 10:45 PM
Size of the round.


09-03-2010, 10:51 PM
I always have spare trigger/hammer pins.
I've never worn mine out in the standard AR, but my girlfriend wore one out after about 15,000 rounds in the .22lr AR.

Sheered right in half.
I carry a few extras in my tool/parts kit now.

09-03-2010, 10:52 PM
Same things as in every other firearm, the springs tend to wear out the fastest. Other than that, I've seen dust covers break off, or simply fail to stay latched (old CO's rifle) seen a few broken buttstocks and front sight posts, but that was on the bayonet range before they had us switch to the rubber ducks, and a few of those got snapped in half as well. Not sure what ended up breaking on the rifle, but during urban warfar training, we used a rifle as a step to launch a guy up through a window, needless to say one guy was a bit on the heavy side and the rifle flexed ALOT and I heard some creaking coming from it.

But for regular wear and tear from normal usage, springs, then I'd say the bolt/ parts of the bolt.

09-03-2010, 11:37 PM
springs, bolt and barrel.

thats why chrome lined, hammer forged barrels and MPI/HPT bolts are worth every penny more that you pay.

09-03-2010, 11:53 PM
magazines....i already wore out 2 mags after 3 months..........

switching to the arc mags now..

09-04-2010, 6:52 AM
How do you wore out magazines

09-04-2010, 7:01 AM
^ you use them alot.

for me, I have buffer springs in my bag. seems to run out at about 5-6k, mines at least. then a firing pin in case and that's about it. oh yeah, oil and cleaning kit helps malfunctions. ;)

09-04-2010, 8:07 AM
Buy one or two of these just to have laying around in case.

09-04-2010, 8:39 AM
Springs, pins and bolt.

09-04-2010, 9:41 AM
As a retired military armorer, I will concur that the magazines tend to break/wear out faster than other parts.

Other items that may need replacement: springs (particularly extractor spring), pins, extractor, firing pin.

During certain types of field use, stocks, handguards and even front sight posts would get broken.

09-04-2010, 11:23 AM
Springs and gas rings.

09-04-2010, 12:27 PM
The first (and so far the only) part I have had to replace was the extractor spring.

the foot
09-04-2010, 5:48 PM
If I have a problem with a weapon, I stop firing the weapon, take it home and look for the cause. Normally it's a spring and I can maybe figure that out. I am not a gunsmith, so if I can't see and fix the problem, I take the gun to Mike. My gunsmith.

09-04-2010, 6:10 PM
I've not had any problems with springs or magazines or the trigger/hammer. What I have had to replace a few times now is the firing-pin retainer-pin. It looks like a cotter pin and gets all beat up from the back-and-forth action of the firing pin.

In the CTD link above and pic below, there are three of them shown.

09-04-2010, 6:16 PM
Clean the carbon off the bolt and keep an eye on the gas rings. If the bolt drops free it's time to replace. After that it would be the barrel but that's a lot of rounds........

Thanx, Russ