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Posted: 6/7/2026 9:43:36 PM EDT
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I made the below post on @davidb1982 post asking if the 11.5 LT was worth it. Well I finally got my omega valve from what ever the guys company is and I installed it Friday night. I got a chance to shoot it today, I started with the normal 1 round in the chamber, on the lowest setting with my griffen 224 can on the barrel. I aimed at the back stop and shot the gun, immediately thought I am going to have to open it up for more gas. I leaned the rifle over and looked and holy shit the bolt was locked to the rear. I can easily feel when an ar locks open, but no this thing shot so soft I thought it might have not even ejected the round. This took the rifle from what I posted below to wow this thing shoots great. I knew it was probably over gassed by the recoil before but the brass actually ejected to the normal 3-4 oclock. Bolt speed was just high which I blamed on no buffer system and a light weight bolt. No it turns out it is over gassed with a medium back pressure can and the normal gas plug, like bolt speed being mach 20. With the omega gas plug bolt speed feels like a nice sedate 35 mph. I have a PA 3x on it, and I knew I could hit 3 moa plates out to 400 before by hearing the ring. With the omega in it I could actually see the steel move thru the 3x. Yes the gun moved but it did not jump around like before where I would even lose the back stop thru the 3x. I am not trying to shill anything, but if you have a spear lt your a fool if you don't get the omega valve. It takes what I thought was a high bolt speed, too sharp of a recoil ( for 556 ) and made it a really nice shooter. At 100 yards with wolf gold I am getting about 2.5 inch groups with the 3x, but hitting a 12 inch square at 400 is pretty easy. Stretching it to 500 is possible I went about 75% hits, using the 600 yard mark in the 3x. The 3 moa plate at 300 does not stand a chance. BTW I still hate the PA 3x Chevron, please PA do away with the damn thing and use a normal cross hair or pretty much anything else besides the Chevron. I have one on an AR lower, I got a deal by being a SIG connect member. It was still pricey, it is heavy ( not terribly ) and the recoil stroke is weird, not bad just different. I debated getting a 8.5 300 or the 11.5, at this point I wish I had gotten the 300. Why no real reason at all, I bet if I had gotten the 300 I would probably be saying I wish I had gotten the 5.56. AKA its not a OMG best thing since sliced bread thing. Yes being able to fold the stock is cool, but even folded its only like 3 inches shorter than my 8.3 300 AR with the stock collapsed. So a lot of money to fold and not really be any real amount shorter for something like a truck gun use. |
"I am gonna laugh my ass off looking out the air vent of the box car watching some of you shot in the head in a ditch when you finally realize it's time to resist." stolen from RR_broccoli
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Originally Posted By thehun06: Yup. Venting a gas block does wonders for the MCX platform (I threaded my OEM gas block like what Omega has done at about the same time frame) ... to be honest ... SIG should do it out of factory like HK. It's what I like about the 416's auto regulating gas system, the piston has a stem that blocks the gas vent until the gas block is pressurized and the gun has begun cycling, the remaining gas is shunted forward and out. The newer ones do the same shit with gas jet screws for tuning. Fully closed systems make sense for 300Blk due to needing to cycle subs, I figure that's probably Sig's reasoning, but an adjustable vent works wonders for keeping the thing from being grossly overgassed. I think I would've preferred that they kept the auto regulating system they had in the original MCX, I don't think folks understood that the two position military gas valve for 5.56 was normal and adverse, not suppressed and unsuppressed. |
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