Hello everyone,
About half a year ago I purchased a GSG MP 40 in 9 mil. The main purpose of the firearm is to dispatch a few farm critters per year (pigs and sheep), which it does just fine.
I've been using it for target shooting as the ammo is more than reasonable in price. I must say that I'm not very impressed with the quality of the firearm. I want to make some improvements to it. Since the firearm isn't a high value, collectors piece I'd like to perform the work myself.
Here's the list of issues:
- After every few dozen shots I have to tighten all of the bolts as they loosen under the power of recoil/vibration. I'm planning to put some Loctite on the fasteners. Is there a specific type that I should use?
- Today the pin/handle for the bolt flew out during my shooting session. There isn't anything securing it in the bolt, it just clicks into place and has some kind of thick grease on it. Can I Loctite it as well? It does need to be removed for full disassembly.
- I want to put a Red Dot sight on the firearm as the factory sights aren't very accurate. The gun doesn't have a rail of any sort on it. There are two mounting threaded holes near the rear portion of the factory iron sights. Do most sights come with a mounting rail or do I have to find a specific piece to fit the gun?
- The most pressing issues are associated with the cycling. While shooting the gun sometimes doesn't fully cycle. The round gets stuck halfway between the magazine and the chamber. During this instance and after completely emptying the magazine I have to remove the mag as I can't pull the bolt back with it in place. Afterwards I can retract the bolt and secure it in the open position. I've disassembled the gun and thoroughly cleaned it with Hopes all in one cleaner/lube. I always wipe off any excess and am very thorough with my cleaning. I use a pile of cotton swabs and paper towels to properly clean every crevice. There are no visible burrs or damage on the bolt or the interior portion of the gun's body. Basically I can't find anything that could possibly cause it to seize during the aforementioned situation.
Thank you for your advice in advance!
About half a year ago I purchased a GSG MP 40 in 9 mil. The main purpose of the firearm is to dispatch a few farm critters per year (pigs and sheep), which it does just fine.
I've been using it for target shooting as the ammo is more than reasonable in price. I must say that I'm not very impressed with the quality of the firearm. I want to make some improvements to it. Since the firearm isn't a high value, collectors piece I'd like to perform the work myself.
Here's the list of issues:
- After every few dozen shots I have to tighten all of the bolts as they loosen under the power of recoil/vibration. I'm planning to put some Loctite on the fasteners. Is there a specific type that I should use?
- Today the pin/handle for the bolt flew out during my shooting session. There isn't anything securing it in the bolt, it just clicks into place and has some kind of thick grease on it. Can I Loctite it as well? It does need to be removed for full disassembly.
- I want to put a Red Dot sight on the firearm as the factory sights aren't very accurate. The gun doesn't have a rail of any sort on it. There are two mounting threaded holes near the rear portion of the factory iron sights. Do most sights come with a mounting rail or do I have to find a specific piece to fit the gun?
- The most pressing issues are associated with the cycling. While shooting the gun sometimes doesn't fully cycle. The round gets stuck halfway between the magazine and the chamber. During this instance and after completely emptying the magazine I have to remove the mag as I can't pull the bolt back with it in place. Afterwards I can retract the bolt and secure it in the open position. I've disassembled the gun and thoroughly cleaned it with Hopes all in one cleaner/lube. I always wipe off any excess and am very thorough with my cleaning. I use a pile of cotton swabs and paper towels to properly clean every crevice. There are no visible burrs or damage on the bolt or the interior portion of the gun's body. Basically I can't find anything that could possibly cause it to seize during the aforementioned situation.
Thank you for your advice in advance!
