01-27-2012, 02:29 PM
I took the gun to a local yesterday, he did an install of the JP reduced weight springs kit and polished the hammer and other surfaces. We measured the trigger pull at 7.5 lbs before the work and 4.5 lbs after he was done. No other changes made in the fire control group area.
He mentioned that the length of travel to engage (disengage) the disconnect was greater than most other AR's. He was baffeled at this observation, he threw in a couple of different parts but the gun reacted the same to all. He said it wasn't a problem just to be advised.
Also I had him put in a BCM Extractor Spring Upgrade Kit. BOY did that give him fits. We both tried (4 hands at once) to tame that beast but we couldn't get the cross pin to go in with the new spring and oring donut. So we ultimately dumped the donut and went with just the upgrade spring and that still was a chore.
Before the upgrade the cross pin would fall out with little to no encouragement (gravity would do it with a few shakes) and after the upgrade I cannot even budge the extractor with my fingers TIGHT. Hopefully there isn't too much stress on the cross pin now and/or it doesn't mar the rim of the cartridge during cycling...
BB
He mentioned that the length of travel to engage (disengage) the disconnect was greater than most other AR's. He was baffeled at this observation, he threw in a couple of different parts but the gun reacted the same to all. He said it wasn't a problem just to be advised.
Also I had him put in a BCM Extractor Spring Upgrade Kit. BOY did that give him fits. We both tried (4 hands at once) to tame that beast but we couldn't get the cross pin to go in with the new spring and oring donut. So we ultimately dumped the donut and went with just the upgrade spring and that still was a chore.
Before the upgrade the cross pin would fall out with little to no encouragement (gravity would do it with a few shakes) and after the upgrade I cannot even budge the extractor with my fingers TIGHT. Hopefully there isn't too much stress on the cross pin now and/or it doesn't mar the rim of the cartridge during cycling...
BB