- My idea of why the AG kit damages your bolt carrier is not the cause as the overall length of the system, as the AG kit is about 3mm shorter than the OEM.
- Others who thought that the force of the recoil and the bolt carrier flying forward hitting the impact block is not the reason either. As I have now ran about 1200 shots through my gun and there is no signs of damage on either peice.
- I've done numerous full magazines and also numerous partial magazines 2-3BBs to let the bolt carrier impact the bolt stop and to inspect for any damage, it's locked back everytime and there is no signs of damage.
- I've been able to shoot 123bbs (3 full magazines + 3 BBs) through a single fill of gas, though this was being shot with semi-auto and being shot roughly 2 shots per second. The bolt locked back everytime for the three magazines worth of shots.
- Unless your magazine is warm, you will NOT be able to fire a complete magazine on full auto. At about 40 degrees, the magazine gave up at 14bbs. Previously when my magazines and gas were warm, I was able to get a full magazine out of the gun.
- One possible cause of reduced travel is caused by increased pressure in the buffer tube. The drain ports, which on a real AR are meant for water drainage IMO also aid with cycling and venting. With the OEM buffer, you can feel the air from about 1' away from the buffer tube by pulling back on the charging handle. With the AG kit, the rear port is blocked and no longer functions, though the lower hole still does. This IMO, while probably not very significant, could cause increased pressure in the buffer and reduce the travel of the bolt when the magazine release pressure isn't at it's best.
Real steel buffers do not have a full circle at the base of the buffer and are shaved flat in portions for I'd imagine venting purposes, especially when there's water in the tube. The OEM setup is completely round, though it also has two vent holes. I've drilled a small hole in the AG spacer plate and can now again feel the air vent from the rear of the buffer tube. I will conduct more testing post drilling.
NOTE: I do not feel this is a significant reason, though I feel it's just adding another straw to the camals back.
- One error could also be caused by improper installation, if you're not careful with the installation the spacer at the end can flip upside down, flip sideways, or the spring can come off from the spacer lip and seat incorrectly, both of these decreasing travel. If either of these occur, your bolts travel is reduced by roughly 3-4mm from the OEM setup. Also sometimes when the spacer isnt' installed correctly, you'll hear the spring bind (not always), which would cause issues with proper cycling. When it's installed incorrectly the bolt travels back JUST enough to allow the bolt lock to rise, but it won't have enought time to fully travel upwards. As I originally thought, the lack of full travel is the cause here.
Edited by akiraspeedstar, 30 January 2013 - 11:27 AM.