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About MikeRush

  • Rank
    Calls Shots

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  • Gender
  • Location
    Oceanside, CA
  • Interests
    Shooting real fast.
  • Real Name
    Mike Rush
  1. No. The metal grips are metal grips. Mainspring housings come in a variety of shapes and sizes. The SV Ergo and maybe the PT Evo both have a more CZ-ish back strap profile. The SV comes with a custom MSH that matches the grip and beavertail. Maybe that is what you are referring to. Either way, they don't match the profile of a standard arched MSH. I do greatly prefer the ZM/Dawson metal MSH on a plastic grip to the plastic MSH. I like the SV Ergo even better.
  2. I agree with you on this point. The difference is we aren't talking about an AR chamber and bolt. There are no locking lugs as these are straight blowback. Also, unlike a standard AR bolt where the firing pin can't reach the primer unless the bolt is in the locked position the blowback ARs will fire out of battery. You could have over 30k psi supported by nothing but the brass. I've seen enough blood on multiple occasions from out of battery ignition that I wouldn't do it. If you want to that's cool but think about who might be to the right of you. For me, as a right handed shooter an OOB incident would likely spit brass at the RO. It might be worth it to you, but personally I'll just get the defective round out and keep shooting.
  3. The Red Oktober match allowed any ammo, which was nice. Barring that I would try to use Yugo M67, which, I believe doesn't attract a magnet. As an update, SJC now makes a Titan comp for the AK so I think mine is about to get louder and flatter shooting than ever before.
  4. Here is a thread with a few different angles of it: http://forums.brianenos.com/index.php?/topic/244227-9mm-lsi-ss/ I like the Romeo3. I have been using one for PCC where it is perfect. I like it on the Open gun and the brightness seems good. I like it as much as a standard, vertical CMore with the benefit of reliable 9mm ejection and less height over bore, and much better than a 90 degree CMore.
  5. I am using the Double Tap RTS2 mount with my Romeo3. The blast shield just needs 2 holes drilled to be able to mount it to clear the extended front profile.
  6. When you say a 5" gun you mean a full length, government slide, correct? In that case the barrel would be 5.5", and you would need to add a .4 to a half inch to all of your other numbers to include the part of the barrel that is threaded unless you are talking about a cone comp gun. Just trying to clarify so nobody orders the wrong barrel. My understanding is that the IMM barrel is around 5" to the crown. I don't have one here to measure but someone probably does. I tried to reach out to Schuemann about ordering a 5", threaded IMM length hybrid barrel and didn't have any luck. I tried to order or backorder a 5", plain hybrid and didn't have luck with that either. You may have better luck, and if that is the case I wouldn't mind ordering one and I can think of some others who would probably want to order as well, if they do a limited run.
  7. Last I heard they do not typically sell the IMM length barrel (appx. 5"). They sell a 5.5" for a full length slide. IIRC the IMM has is an AET configuration and the barrels they sell separately are not. Glenn Rasch at LSI was able to confirm adequate material for lockup, mill a portion of the rib off and thread a 5" Schumann hybrid for a SS (midlength) build. I love the length and balance of it and lockup is perfect.
  8. That's if you aren't completely sold on jumping in to Open. If you are sold on Open skip the 40 and buy a 5" to 5.5" 9 Major 2011. Resale on a 40 caliber Open gun is terrible and if you have a competitive personality I doubt you would be happy with it. My rule of thumb for gun selection is to pick something similar to what the super squad uses. That way you never have to wonder "what if I had x gun". Right now in Open that means a mid or full length 38sc or 9 Major, split between plastic and metal grips. Most have some holes, some have smaller RDS like the RTS2 and everyone else runs a vertical C More. The further you deviate from that the more excuses you have, which I feel is detrimental.
  9. 40 Open and ideal don't belong together. If I were in your shoes and didn't know if I wanted a competitive Open gun I would play with CO more and if you like the dot (even if you don't like the trigger, grip angle or whatever) then invest in a competitive Open setup.
  10. I think there is a lot of ambiguity in what a "short" open gun is. Some consider it to be anything less than a 5.4. The general consensus seems to be that a gun using an uncut Government length slide is a full size gun, with the barrel being 5.4 or 5.5 inches. A shorty would be a gun with a Commander length slide, with a barrel length of 4.65 to 4.75 inches. Something in between (like the IMM, LSI SS, a lot of the Akais, Brazos Pro Sx) usually starts with a government length slide cut back about a half inch, for approximately a 5" barrel length. The midlength seems to currently be hot with the top shooters (and some super squad shooters are using shorter open guns in 9mm). I think a lot of people state their gun lengths relative to how much gets cut off a government slide, i.e. a government length slide cut back a half inch would be called a 4.5" even though the barrel length is closer to 5". A cone comp is an exception to this as the thread engagement can be inside the slide. I have tried to follow what the top 16 are shooting, and I haven't yet seen a top shooter shooting essentially a steel challenge gun at a major USPSA match. Can you make major with a 4.1" SC gun? Sure. But I am inclined to believe there is a reason none of the top guys seem to be using guns that short for major PF.
  11. The shorter the barrel the less buffer weight you "need". The bolt/buffer mass in a blowback gun is designed to keep the bolt closed long enough for pressure to drop to safe levels that the case can withstand. The shorter the barrel the less mass you need for safe operation because the pressure in the barrel drops sooner. If you look at an SMG design book you should see the formula demonstrating that this is the case. I've tried removing the mass from the bolt and running a 9mm buffer in a 16 inch barrel and I liked the combo a lot. I would like to go lighter, eventually, but with a 16" barrel I don't want to get too close to the edge.
  12. I would not want a 9 Major gun that short, personally. I would contact them and see what loads they can recommend that make PF and see if you are willing to accept that limitation. I just got an LSI SS, which is a 5" mid-length 9 major and the balance and dot tracking is perfect for me. It already takes a fairly heavy and compressed charge to make PF at that length (albeit with 3 popple holes) at 9.3 grs of HS6 with a 115 Precision Delta.
  13. I use the Double Tap RTS2 mount for my Romeo3. My smith redrilled the blast shield (although we could have just left it off) to clear the extended front profile compared to the RTS2.
  14. A number of people are making direct impingement 9mm uppers at this point. Most need a bit of extra gas to cycle. I think the issue you would have with a piston in a 9mm AR is the barrel nut. The MPX taps its gas from essentially where the barrel nut is in relation to the chamber on an AR. There are a few people running skeletonized 9mm DI bolts and lightweight buffer setups that are claiming proper function with factory ammo. If you were able to use a similar setup with a piston you may be able to get it to run. I really want someone to come up with a a dual mass or roller locked delayed blowback 9mm upper.
  15. The balance, shooting dynamics and fit/finish on this gun are incredible! I didn't think a 9mm could shoot this flat without being harsh- I was wrong! Thanks Glenn!