Gas Chamber Port

I'm hoping someone can please help me out here. I already wrapped everything to send the Inland Barrel to have it swapped out to replace the worn out one it has. The gas port is clogged on the one I'm going to use. Before I wrapped it I checked the port and it's clogged. I heard that there is a certain size of Bit you can gently use to twist it to unplug it or is there a type of Solvent I can be use to loosen it up and then use the bit to turn it back and forth. Now if I do it this way and it unplugs would I have to take it apart and clean the chamber out then re-install the piston and nut. I used the stem of the oiler and it goes right through the one I cleaned a lot and it goes all the way to the back. I would hate to disassemble the Nut and Piston. But is this the only way. BTW when I hold and close one end and blow the piston does move freely, but that's another thing when I assemble the Carbine back together when he sends it back to me shouldn't the gas port be clear. Any Advice ? TIA

jackp1028 wrote: Hi Frank. Hopefully your gunsmith will have checked it after installing and head spacing the barrel. After all there might be some metal shavings that could find their way into the port. When you get it back, just clean it normally. When you first shoot it, anything clogging the port will probably be blasted out by the hot gasses and the carbine will work normally (you don't want to take the piston apart if you don't have to). If not you will have to remove the gas piston nut and gas piston and use a .070 drill bit to chase out the port. Do this by hand being careful not to enlarge the hole or remove metal. A little solvent might help. After reassembling the piston and nut, check to see that the piston moves freely. Then restake the plug. There's a nice cross section view of the gas cylinder here: http://www.uscarbinecal30.com/barrels.html

Jack, Thank You So much for replying. I didn't want to remove the Nut and Piston as I heard that if not put back correctly the Nut could loosen on you then you have to Stake it like you said. I looked at it and didn't see any Stake Marks around the Nut. I'll just ask him to check it out and see if he can do it and let him deal with it. He has done several for guys on Milsurps and Bill recommended that I send it to him to have it done since it was a Hand Stamped Receiver. Also the size of the bit I couldn't find anything on back post what size I needed, but seen it somewhere. Thanks for the advice. I really appreciate the Help.

Yeah he is...He said he was, but still going to be careful when I shoot it. I just got off the phone with him and told him about it and he said "I'll look over everything and what needs fixing will be fixed". Thank You.

The one great thing is the piston moves freely. In the Technical Manual it does say that the Gas Port should be clear. I was just wanting to know cause I seen people talk about cleaning them. It did say that All Carbines are staked when installed, but I have a Carbine I've never messed with and the nut with the a little force comes right off unlike the one that the Nut was so tight it seemed welded, but I know it's not just using it as an example. So I didn't want to force it and break anything so I left it alone. I just wanted to know if I clean it how does that residue (clog) come out of the chamber without taking it apart. If these are staked already like it says in the Manual how do you clean out the chamber ? Before I put back my Inland together when the Barrel arrives any suggestions what I should to the Barrel before I put it together then shoot it a couple of times then clean it and put it away ?

I was thinking with people using all sort of ammo, old surplus and reloads that maybe some of these Carbines can get clogged or real dirty. After all the Barrel was so worn it had to be replaced. It came like that and was my first USGI Carbine buy so I didn't know a lot back then what to look for. I did get lucky though with this Carbine. It wasn't never reparked, non Import and it was a Hand Stamped. I got it for 650.00, but Finally knew why he gave such a great deal. I really like this Carbine and with this Nice '45 Inland Barrel that the ME was great it's going to group a lot better.

Which Receiver ?

I have one that the nut loosens and all falls out. Intend to stake it but am not sure if the nut is in as far as it should be. A couple threads show after I have seated it as far as I dare. Any suggestions?