Confirm Action

Are you sure you wish to do this?

Confirm Cancel
Member Login
Site Notices
1/25/2018 7:38:29 AM
Posted: 6/20/2001 11:00:02 AM EST
I was just wondering what is the expected lifespan of an AR-15's lower receiver. It seems that the upper receiver takes the brunt of the forces when you fire a bullet. I'm asking becuase I have an old 1979 Colt AR15 sporter 1 that I fired 800 rounds thru it. I want to buy a Bushmaster Carbine upper and a collapsible stock for it and use that as my main shooter. Other than for metal fatigue of the actual receiver itself, I can always get replacement parts for the lower receiver as needed (trigger, etc). If this is true, then I have no qualms about shooting the hell out of it, but if I am wrong, then I may make a postban bushmaster my main shooter. Thanks!
Link Posted: 6/20/2001 11:05:10 AM EST
Kin, That old lower may be unsafe. Better send it to me for proper treatment before someone gets hurt.[;)][;)] FatMan
Link Posted: 6/20/2001 11:11:33 AM EST
As long as your no bashing baby seals over thier heads with it, the lower should outlast even your stay on this planet.
Link Posted: 6/20/2001 11:45:14 AM EST
IIRC Bushmaster has test fired every upper they have ever built on two lowers. Several hundred thousand rounds put through each. They had a few parts break, but the actual recievers are still functioning.
Link Posted: 6/20/2001 4:40:25 PM EST
Link Posted: 6/20/2001 10:43:06 PM EST
I'd say 3 years, tops ... in the PRK.
Link Posted: 6/21/2001 5:10:21 AM EST
Link Posted: 6/21/2001 8:25:17 AM EST
I guess that the 100,000 rounds would be for a military service M16. A civilian one should last longer since we only have semi-auto (less stress on the pins than full auto?)and I doubt that we will be reanodizing it.
Link Posted: 6/21/2001 11:09:38 AM EST
Kin, even if you do manage to wear out that lower receiver, when it becomes unservicable and beyond repair Colt will build you a new one and transfer the serial number from you old one to it for a modest fee.
Link Posted: 6/21/2001 11:16:28 AM EST
Originally Posted By FatMan: Kin, That old lower may be unsafe. Better send it to me for proper treatment before someone gets hurt.[;)][;)] FatMan
View Quote
Hey,find your own corner,I work this one!!!!
Link Posted: 6/21/2001 11:37:26 AM EST
Hey Boomer, Thanks for the info. I never knew that Colt would do that. Do you know of an actual instance where Colt did this for someone? I guess that as long as Colt stays in business, I can shoot all I want without worry.
Link Posted: 6/21/2001 11:46:02 AM EST
Off the top of my head, I can think of at least two members of these forums, Stokes and Ratatat, for whom Colt has replaced irrepairably damaged pre-ban lower receivers with new, current production versions and transfered serial numbers.
Top Top