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  1. I take that as an encouragement.
  2. I agree with your assessment. I have been thinking ways of improving it.
  3. Do you think this concept would work?
  4. Close Up Diagram Cross-section Diagram The total upward pressure of a fully loaded magazine is equally distributed between the top first round and the pressure damper. The total amount of upward pressure of 40 rounds, divided by 2 should be less than the total amount of upward pressure exerted by a 30 rounds magazine.
  5. This is designed as a drop-in kit for existing DI AR's. This kit would comes with two favors. A2 style front sight with built-in PSV, or rail gas block with built-in PSV. The existing standard Gas blocks are basically a block of solid metal (with internal gas channel). I thought we could introduce a little complexity to turn it into a auto-adaptable gas block.
  6. Pressure Relief Valve (PSV) for standard Direct Impingement AR's. Standard Gas Block with integrated PSV Disassembly Diagram Belleville Springs Washers Reference (explaining the strength of spring washers) https://docs.google.com/viewer?a=v&pid=...Qy&hl=en_US Design and Animation (created by Google Sketchup8 Free Edition) https://docs.google.com/leaf?id=0B9XSnDKMwp...Ux&hl=en_US Features and Advantages 1. Improve durability and longevity of AR internals. 2. Automatic adjust internal gas pressure when equiped with sound suppressor 3. Automatic adjust internal gas pressure when chambered with ammo of different brands 4. Completely disabling gas pressure by removing PSV internal (i.e. springs groups and main seal..etc) 5. Simple and durably design 6. Interchangeable spring groups for different barrel lengths (i.e. 7.5", 10.5", 12.5", 14.5" and 16"..etc) 7. Decrease the possibility of catastrophic failure or receiver explosion as a result of extreme gas pressure.
  7. The front double buffer tubes are protected by the sealed composite buffer tube casing. This casings are very lightweight and have very low heat conductivity. All I have done is to rearrange the rear buffer tube to the front. The front buffet tubes have half the diameter of any standard buffer tube in order to be fit inside a standard handgaurd/rail system. When the piston get pushed back by the hot gas, it also compress the front buffer tubes simultaneously. The carrier key cup secures the carrier key tightly in place so that the piston rod could push/pull the BCG. Because The carrier key cup tightly secures the carrier key, it may also solved the issue of carrier tilt. This upgrade kit would also provide a custom shorter version of BCG so owners would not have to saw off the excess part of their standard bolt.
  8. My concept was a piston upgrade kit for standard AR. This kit also eliminate the need of having a rear buffer tube.
  9. Thanks. It is not exactly a standard AR. It looks like a specialize designed upper receiver.
  10. How was that modification worked? Where would they put the AK style spring?
  11. You are correct. I basically rearrange the buffer tube to the front and use two smaller buffer tubes so they can be fitted in a handguard/rail system.
  12. Advantages of this piston upgrade kit concept: 1. Same level of complexity as the standard AR gas piston system 2. Zero to Minimum modification required for installing this piston system to any standard AR platforms. 3. The installation of a folding stock on a standard AR is now possible. 4. A custom BCG may be provided so owners would not have to saw off the last part of their standard BCG.
  13. I could improve the concept with the following: 1. Re-position the upper valve much closer to the gas tube. This would help the entire BCG + BCP get pushed backward sooner. 2. Re-position the lower valve much closer to the returning gas. This would help pushing the BCG + BCP forward sooner. 3. Shorten the path require for the gas to travel through the entire gas channel. This should help improve the condition once the bullet leave the barrel and the pressure begin to drop. As the diagram #3 illustrated, the upper valve should remain open until the lower valve returns at the original position. With the above improvements, would you all think there would be enough gas pressure to push the lower valve (BCG + BCP) return to the original position?
  14. CQB Multi-Dimensional Targeting System Composite Free Floating Rails
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