Kel Tec SU 16B

[jg1967]

I noticed 2 things about that model: Gets very hot very quickly and I keep finding tiny brass shavings inside the receiver. Any ideas?

 

[cawpin]

First, what kind of ammo are you using? Have you experienced any malfunctions?

I would try taking a round and coloring it with a Sharpie, completely. Then, load it in a magazine, load into the rifle and fire it. Preferably catch it on a towel/blanket. Look at the case and see if/where brass has been shaved off. I would do several to try and find a pattern.

If it is a new gun it could just be a sharp edge on the bolt face, extractor or ejector.

 

[jg1967]

I mostly use PMC Bronze and whatever affordable factory brass 223 or 5.56 I can find. I have not noticed any brand to be more prone to it. I have had maybe 2 or 3 jams in the couple of hundred rounds I have fired so far.

 

[cawpin]

Ok, try the test and let us know. Also, be sure your specific SU16 is marked 5.56 and not .223 before firing the hotter 5.56 rounds. I *THINK* they are all proofed for 5.56 no matter what they're marked but I would double check with Keltec if yours is marked .223.

 

[jg1967]

Mine is clearly marked 5.56 so that's not an issue but I appreciate the hint!