Colt Problem

[Kurch]

Hey CGN's,
Today I borrowed a buddies Colt Ar-15 for a range date. Its an older model, (no forward assist) 10.5" barrel. I was shooting 55gr PMC and had nothing but problems, it wouldnt properly eject the casings 90% of the time, mashing them into the top of the receiver or double feeding the spent casing into the chamber with the fresh round. What causes this?

 

[y2k]

sounds like ejector/ejectore sring problems, replacement parts is under $15.00 to replace.

 

[kenjuudo]

Sounds like it's short stroking. What does your buddy shoot (ammo wise) out of it...?

 

[Gailamir]

Might want to try a good clean and lube job before starting the parts swap out game.

 

[Dsiwy]

Maybe afew things "i cant say forsure with out looking at it, but here are afew causes

-Do you have a HH buffer?
-bad mag
-ejector is seized or the spring is weak
-worn or broken gas rings
-lack of lube or dirty
-loose gas key
-Also 10.5" barrels have had issue, thats why most people use 11.5"

 

[Kurch]

Sounds like it's short stroking. What does your buddy shoot (ammo wise) out of it...?

He hadnt fired it in quite some time but he was feeding it from a stash of IVI 5.56, and Remington UMC .223. This was the first time it had seen the range in close to a year, prior to which I had cleaned/lubed it. It could be any number of things, I will try and get it back to the range this week after some TLC and with a different magazine. Thanks for all the suggestions so far.

 

[sparrow]

What model is it?. An older Colt 10.5" with no FA sounds like a cut down barrel...more details needed.