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DMB90 · January 26th, 2014, 17:29

Thank you so much for this review. I have just pulled 12 buffer tube cap shims out of my 416 and followed your recommendation to do one more thread.

Before I saw your review I had actually contacted FCC support about gun misfiring and the first thing they suggested was to buy and install more of those guskets :-)

[quote=mcguyver;1797196]Update, June 9/13

Well, I got to play around with the Velocity cylinder this weekend. It was originally shooting about 350 fps with a pretty wide deviation window from factory with an FCC M115 spring. The original spring that came with this cylinder and gun was the M160. I never bothered to chrono it as it is a waste of time and never will be used anyway.

I cleaned the factory silicone grease out of it a month ago and have gamed it a few times, putting about 2000 rounds through it. It was shooting 370 fps after I cleaned out the grease out of it in favour of Systema lithium cylinder grease. The fps increased to about 370 fps and the deviation window dropped to around 10 fps. As I moved this cylinder from gun to gun, I noticed that it just didn't feel like the nice, positive lock I have come to expect from years of Systema use and dozens upon dozens of cylinders. Even with the retensioning of the lock bearing, it was still a bit spongy. So, I decided to replace the spring guide with a Systema spring guide, and the difference was immense. The fps increased to 404 fps with a deviation window of 4 fps.

Well, looky here, if it isn't the same useless buffer cap that I found in my 416. It would appear that there was in fact more than one of these manufactured and they were most certainly installed at the factory. Even more to this was the fact that the shimming of this buffer cap was out of control:

Note the number of shims on the cap, they take up a third of it. I was a tad flabbergasted when I pulled 8 of them off my 416, and that was a record until this gun came into my hands. Please count them for me:

Yes, there were 12 shims, that has got to be a record. The solution to this was simple, turn the buffer in once more and eliminate all the shims. The EZ-pull pins on the body are tight, but guess what, they are tight even without a cylinder in the gun.

January 26th, 2014, 17:29	#114
DMB90 Trader rating Join Date: Feb 2013 Location: GTA	Thank you so much for this review. I have just pulled 12 buffer tube cap shims out of my 416 and followed your recommendation to do one more thread. Before I saw your review I had actually contacted FCC support about gun misfiring and the first thing they suggested was to buy and install more of those guskets :-) [quote=mcguyver;1797196]Update, June 9/13 Well, I got to play around with the Velocity cylinder this weekend. It was originally shooting about 350 fps with a pretty wide deviation window from factory with an FCC M115 spring. The original spring that came with this cylinder and gun was the M160. I never bothered to chrono it as it is a waste of time and never will be used anyway. I cleaned the factory silicone grease out of it a month ago and have gamed it a few times, putting about 2000 rounds through it. It was shooting 370 fps after I cleaned out the grease out of it in favour of Systema lithium cylinder grease. The fps increased to about 370 fps and the deviation window dropped to around 10 fps. As I moved this cylinder from gun to gun, I noticed that it just didn't feel like the nice, positive lock I have come to expect from years of Systema use and dozens upon dozens of cylinders. Even with the retensioning of the lock bearing, it was still a bit spongy. So, I decided to replace the spring guide with a Systema spring guide, and the difference was immense. The fps increased to 404 fps with a deviation window of 4 fps. Well, looky here, if it isn't the same useless buffer cap that I found in my 416. It would appear that there was in fact more than one of these manufactured and they were most certainly installed at the factory. Even more to this was the fact that the shimming of this buffer cap was out of control: Note the number of shims on the cap, they take up a third of it. I was a tad flabbergasted when I pulled 8 of them off my 416, and that was a record until this gun came into my hands. Please count them for me: Yes, there were 12 shims, that has got to be a record. The solution to this was simple, turn the buffer in once more and eliminate all the shims. The EZ-pull pins on the body are tight, but guess what, they are tight even without a cylinder in the gun. Last edited by DMB90; January 27th, 2014 at 13:07..