aessu Posted March 3, 2010 Share Posted March 3, 2010 (edited) Well, I'm a student and want to make my rifle a bit more competitive, but I'm on a budget. So here you go with pictures. Sorry about the quality, some of them are cell phone pics. So here is what I have, a frankenAR: To get it started with, I modified the standard FSB into a adjustable gas system one. Tools used were angle grinder, drill press with 2.5mm bit and a M3 thread tap. I also found that there's some unneeded parts in the rifle: Removing the weights from buffer made it lighter than the JP lowmass buffer. If I'll start experiencing problems with bolt bounce, i'll add one of the weights back and it should cure the problem. It would still be lighter than JP LMOS. This is something I'm still working with: Now weights in at 234g with key, standard carrier being 263g with key. Hope you'll enjoy it and get some ideas yourself. Atm I'm waiting for my Millett DMS-1 and Burris PEPR mount. I know it's not Meopta or Swarovski, but I'm having problems shooting from prone with my glasses on, as the frame of my glasses sits almost right at the center of rear sight. Shot it today with the standard weight carrier and empty buffer, after adjusting the gas system (I used JP's manual for adjustable gas system as help, ) Was a blast! Recoil felt almost like I would be shooting a .22lr instead of .223 Edit: cost of modifications so far: 75 dollars for carrier and 14cnt for adjustable gas system ( I bought a spare carrier, just in case). Add 300 dollars more for optics and mount. Edited March 3, 2010 by aessu Link to comment Share on other sites More sharing options...
Jesse Tischauser Posted March 3, 2010 Share Posted March 3, 2010 I like it. Very resourceful! Link to comment Share on other sites More sharing options...
aessu Posted March 3, 2010 Author Share Posted March 3, 2010 (edited) Oh I almost forgot. I'm going to cut off the front sight, like on a Remington R-15 or Bushmaster Predator after the scope arrives. And here's a quick sketch I made some time ago about the adjustable gas system: The text "Kaasuputki" is gas tube in finnish, and the black area is where the hole is being drilled to. So the adjusting screw/hole is also drilled partially through the gas tube. This was the only way I could think of it with getting enouch material around the hole. Edited March 3, 2010 by aessu Link to comment Share on other sites More sharing options...
patrickbeijer Posted March 3, 2010 Share Posted March 3, 2010 That looks good ,and it probably works even better. I know there is a guy in Finland that takes even more weight off the carrier , it is even alot leighter then the JP carrier (JP carrier weights 185 gram) Link to comment Share on other sites More sharing options...
aessu Posted March 3, 2010 Author Share Posted March 3, 2010 That looks good ,and it probably works even better. I know there is a guy in Finland that takes even more weight off the carrier , it is even alot leighter then the JP carrier (JP carrier weights 185 gram) Yeah, I know him from the internet too, but I want to do it myself. Having access to a machine shop in university certainly helps a bit Link to comment Share on other sites More sharing options...
patrickbeijer Posted March 3, 2010 Share Posted March 3, 2010 Do you know iff there are picture's off his work on bolt carriers ? I want to do it myself too on my next upper Link to comment Share on other sites More sharing options...
aessu Posted March 3, 2010 Author Share Posted March 3, 2010 Do you know iff there are picture's off his work on bolt carriers ? I want to do it myself too on my next upper This is the only pic i could find: Link to comment Share on other sites More sharing options...
patrickbeijer Posted March 3, 2010 Share Posted March 3, 2010 Thanks Link to comment Share on other sites More sharing options...
major9 Posted March 17, 2010 Share Posted March 17, 2010 aessu, Nice work! Are you getting any blowby from the screw in your adjustable gas system? I think I'll go play with my AR. Link to comment Share on other sites More sharing options...
aessu Posted March 18, 2010 Author Share Posted March 18, 2010 None whatsoever that i can notice. I used a bit of red locktite on it after adjusting it. (I adjusted when it was -15C outside, so during summer it will be a bit overgassed, but IT WILL WORK, and that's the most important thing. Reliability, reliability, reliability). Link to comment Share on other sites More sharing options...
MustangGreg66 Posted March 23, 2010 Share Posted March 23, 2010 That's pretty cool. I never thought to play around with the recoil components until reading this and several other threads here in the rifle section. Looks like another bunch of research and things to tinker with Link to comment Share on other sites More sharing options...
aessu Posted April 3, 2010 Author Share Posted April 3, 2010 (edited) Well, here's another one. I really like the feel of the ErgoGrip with the SureGrip surface, but I also think that the grip is a bit too narrow. So i went with a Magpul MOE and finally decided to mod it a bit. Heres what you need: a small piece of bicycle inner tube and the grip. Getting there: Finished and put back to rifle: Edited April 3, 2010 by aessu Link to comment Share on other sites More sharing options...
aessu Posted April 3, 2010 Author Share Posted April 3, 2010 Oh yea, almost forgot. The lightened carrier next to standard carrier: Weight is 198g, standard one is 263g and the JP lomas is 178g. Link to comment Share on other sites More sharing options...
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