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Posted: 7/17/2026 8:17:53 PM EDT
| I am running a OG Smith & Wesson MP15. I got combat armory super safety and straight trigger. Shipping was fast. I’ve milled a tiny bit on the high shelf and installed an H3 buffer. Spring is in great shape, but I’m still getting light primer strikes. When I test the safety w/o the upper it functions properly…any suggestions other than keep buying new parts til it works? |
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| Can you describe exactly what happens when you pull the trigger? Does it fire one round? A short burst of rounds? Is your primer dimpled after the light strike? |
It was not preached to the crowd,
It was not taught by the State.
No man spoke it aloud,
When the English began to hate.
It was not taught by the State.
No man spoke it aloud,
When the English began to hate.
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Originally Posted By ryton2227: On semi it works flawlessly, when I switch to super, it fires 1 round, ejects the casing, feeds the next round, then a dead trigger. When I pull the round out of the chamber there is a strike on the primer Yep, that sounds like carrier bounce, which you shouldn't be experiencing if you have a real H3 buffer. Is your buffer made of aluminum, with three tungsten weights inside? The three weights should be about 1.5 ounces each, and should add up to 4.5 or so ounces. |
It was not preached to the crowd,
It was not taught by the State.
No man spoke it aloud,
When the English began to hate.
It was not taught by the State.
No man spoke it aloud,
When the English began to hate.
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Originally Posted By ryton2227: I’m running a Kaw Valley 5.4 oz. They make a couple different versions. It matters that the reciprocating weight inside the buffer be 4.5 oz, not that the overall weight be 5.4. |
It was not preached to the crowd,
It was not taught by the State.
No man spoke it aloud,
When the English began to hate.
It was not taught by the State.
No man spoke it aloud,
When the English began to hate.
|
Get a Tromix H3 and save some $. I have one and it works great. I doubt I will be buying any more tungsten weights, since I found this one... https://tromix.com/ Or, you can buy a real H3 with tungsten weights, like this one. https://kakindustry.com/buffer-h3-5-6-oz-carbine-satin-gold-anodize/ Or, you can a buy this Bolt Carrier. https://kakindustry.com/dbc-ar15-carrier-chrome-lined-phosphate/ (Out of stock at this time...) |
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