Reddit reviews SE 10-Piece Diamond Needle File Set with 150 Grit - 744DF-R

"TM misdesigned the outer barrel for the g17 but since they made it in plastic is flexed and caused no issues. When companies copied the design into metal, the flex was gone and issues arise. All you need to do is take a small file to the bottom of the outer barrel lugs to allow the barrel to drop lower while the slide is cycling so the two don’t scratch and grind against each other; slowing down the cycle, stressing and damaging parts, jamming the gun, and possibly snapping the barrel.

https://i.imgur.com/l6gzCzE.jpg

You will want to take the file to the tight corner high lighted in yellow. Opening it up to have a round crown there instead. Depending on the brand you may need to level the area in red.

Heres a clear photo of what this looks like. https://i.imgur.com/yQjRrrx.jpg

With this tuning you can expect smoother cycling of the gun, the finish on the barrel and top chamber to be preserved, and much less filth in the gun from paint and metal being ground away. also with the less stress on the barrel as the gun cycles, it wont crack over time.

https://www.amazon.com/SE-744DF-R-Diamond-Piece-140mm/dp/B0011565LG/ref=sr_1_2?ie=UTF8&qid=1523025884&sr=8-2&keywords=jeweler+file

I use the round file from this set"

http://www.boomarms.com/shop/item.cfm?id=BM-BEARING-8MM&curr_code=USD

here is the hammer bearing. It replaces the stock solid one with a wheel that spins on a ball bearing. this greatly reduces the resistance on the slide as it cycles and also reduces wear on the hammer since the outer wheel is what moves, and not the post in the hole.

The slide will cycle faster / be more snappy now and will have the benefit of not sticking halfway on the hammer when you slowly rack the slide.

Definitely don’t want to do it yourself? I haven’t yet but I’ve thought about it a lot, all you would need is some diamond files like this:

Link:
SE 10-Piece Diamond Needle File Set with 150 Grit https://www.amazon.com/dp/B0011565LG/ref=cm_sw_r_cp_api_i_wsGwDbBF9SYBZ

Thanks everyone for the advice everyone, I probably would have bought them had I found them yesterday, but I decided to go the DIY route. Since picking must be a very budget conscious hobby for me, I went ahead and took the plunge and bought the important tools. I figured making my own pins would be difficult and require a lot of crazy equipment, but I looked into it and realized it was a lot easier than expected. So just for anyone who's curious, here's what I got:

• $50 Kwikset rekey/pin set from eBay. 200 of each type of pins, 8 types of pins. Clips, followers, springs, and anything else needed to reassemble locks. That leaves enough pins to make absolutely every security pin that I know of, as well as any others that I find from watching people pick challenge locks. There are a good variety of these sets, so you can save some money here by getting only 50 or 100 of each pin type if you prefer. I just decided to start off big so I hopefully never have to buy another.
  
• $35 Rotary Tool. Used for a huge variety of DIY projects, including and excluding lockpicking. There are some cheaper options, but in my opinion you're better off buying at least a decent one to start so you don't have to upgrade later.
  
• $7 Needle File Set. Used in conjunction with your rotary tool as cutting/smoothing tools
  
• $25 Base Vice. Also is very useful for holding locks while picking.
  
   
  
  So in total $112 for all the components needed to make as many locks as I can imagine, many of which can be used for other projects.
  
   
  
  To add supplies for a few other DIY projects I also added:
  
  
• $6 Rotary Tool Bit Set. Used for various DIY projects.
  
• $9 Cutting Wheels for your Rotary tool.
  
• $6 Wood Plank. I'll use this along with the dremel bit set above to make a nice pinning tray.
  
• $2 12" x 0.5" x 0.023" Stainless Steel Feeler Gauge. Used to make picks, tension rods, etc. making it $2 per 2-3 tools. If the thickness you want is expensive/in short supply on amazon you can buy directly from the manufacturer here but in my experience the shipping is slower and the price is usually a ~$0.10 higher per 12" rod. If you really get into making DIY tools you can buy stainless steel feeler coils from easterngage which are 25' x 0.5" x 0.15"/0.18"/0.23"/0.25"/0.26" or any thickness you want really. For 25', depending on the thickness it'll cost you anywhere from $50.64 to $64.95. You might need the 1" wide coils for making double sided tension tools.
  
   
  
  So another $21 brings it to $133 plus $2 per 2-3 tools that you need. Add in this $6 case and a few $4-$6 practice locks around aliexpress (1st, 2nd, 3rd, 4th 5th, 6th, 7th), and you've got a great starter kit that sets you up to DIY anything you might need in the future. I also took advantage of Peterson's mega christmas sale (plus the 10% discount code they gave us) and got a ~$25 order of $1-$3 picks to start me off