good to know noodles and great info.
just so you know vuurwapenblog did a test of the A5 where they gave a 16" rifle a gas port of 1 making it very overgassed and the A5 showed no signs of bolt bounce while very overgassed.
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good to know noodles and great info.
just so you know vuurwapenblog did a test of the A5 where they gave a 16" rifle a gas port of 1 making it very overgassed and the A5 showed no signs of bolt bounce while very overgassed.
Yea, saw that. But bolt bounce doesn't mean high or low cyclic rate. What's interesting is even at 1000-1100rpm, none of the guns tested had really any bolt bounce beyond a little jigger. Including a 10" upper. All using the same H buffer in the m16 lower. I saw surprised to see how little bounce there was with these configurations. The camera setup might not have been ideal (at 70,000 frames per second) but bolt bounce seems to be a complete non-issue this day.
I had mentioned problems with all (3) of my P-mag 20 in HK. Not chambering first round if inserted on closed bolt, failure to feed, failure to lock bolt back.
Because I use them only for zeroing and for competition that limits to 10 rounds loaded I decide to "upgrade" them. I installed 10rd limiters and USGI 30rd mag springs. They work flawless now. Without limiter they have capacity reduced to 17rd with new springs. I expect feed lips to fail sometime due to increased pressure on them.
Someone mentioned in another thread that FDE PMAGs seem to have more issues than the other colors. Is that a joke, urban legend, or true (some issue with that production run or something)?
I own three 20 rounders and have had feeding issues with all three. Same ones already mentioned, bolt not locking back on last round, not stripping round into chamber leaving chamber empty, and double feeds. I do not use them competing anymore, only if i'm doing prone work on steel in which the shorter length is useful.
I have a handful and luckily they have run just a good as the 30rds.
I own two 20 round pmags and I can't say that I have ever had a problem with either. I've got about 200 rounds fired through each of them and I can't recall any malfunctions.
Have 10 of the 20 round PMAGS. over 3k through them. All have been perfect, never a problem with any of them.
One of my pmag20s has a mishapen spine and makes sending the bolt forward difficult even when loaded