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Posted: 1/11/2011 1:18:46 PM EDT
| The title says it all. I'm building a 9mm AR and want to know what compensator works great on a 9mm. I'll be using the rifle for short range matches. |
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The title says it all. I'm building a 9mm AR and want to know what compensator works great on a 9mm. I'll be using the rifle for short range matches. Compensator, Compensator? or a flash hider? Midwayusa and spikes tactical both sell 9mm compensators. 9mm comps are not very popular because they don't exactly function as a comp... they are more of an AWB compliance part. IMHO There are plenty of companies offering 9mm flash hiders... A1's, YHM, vortex, etc. If you can match the thread pitch, you can bore out any muzzle device. Good luck. |
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My experience with 9mm compensators and muzzle brakes is that they don't work any better than a flash hider at speeding up your shot recovery. I tried several on a full-auto SMG and none made any measurable difference (and I did perform quantitative tests, not just "it feels better"). Pressure and gas volume are just too low. Save your $$$ and buy a regular A1 or A2 FH.
If you want to get a competitive edge, buy a red dot optic (way better than irons) and a good single-stage match trigger like the JP. Lastly, if you really like to tinker, have a couple of magazines welded together to create a monster mag... the fastest reload is no reload at all  .
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I use a Carlson. http://www.practicalpage.com/index.php?act=viewProd&productId=47 Not for any real reason though except I take my upper to NY on occasion |
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That mag will be illegal in the matches I attend with my 9mm SBR, just get a good red dot and you will be fine. Who wrote your match rules - Carolyn McCarthy ?  Funny but you want to make it fair, so the limit is 30 or some stages require to change mags at a particular point. Bottom line is that you need to practice magazine changes at some point you will need to do it. |
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I can't imagine any comp is going to be effective on a 9mm blowback action - there's way more reciprocating mass in the action than gas available to overcome the movement of the gun.
If you increase the weight of the gun itself, it should make it feel less jumpy and not come off target as much from shot to shot, but the side effect is a gun that can get real heavy, real quick, which presents it's own challenges... Best thing to do is use whatever you can to your advantage. Work your match rules to the fullest. You may want to try using the lightest loads you can get away with and tune the gun to run them - typically this will allow you to reduce the weight of the bolt/carrier which results in less mass sliding back and forth inside the gun. Possibly consider an HK94/MP5/clone as the roller locked delayed action is much smoother than any blowback AR can ever hope to be. If all else fails, you could always just practice and become highly proficient with whatever equipment you do choose. A good shooter is still good regardless of equipment... |
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That mag will be illegal in the matches I attend with my 9mm SBR, just get a good red dot and you will be fine. Who wrote your match rules - Carolyn McCarthy ? Funny but you want to make it fair, so the limit is 30 or some stages require to change mags at a particular point. Bottom line is that you need to practice magazine changes at some point you will need to do it. With respect, why do you have to make it fair ? Life isn't fair. These kinds of rules smack of the "everyone gets a ribbon" mindset that seems to be permeating our kindergartens of late. I can see the value of magazine size limits in pistol matches (to mimic realistic CCW size constraints), but the only constraint for long guns is their bulk, weight and speed of handling. If you want to challenge the shooter, put them in situations where a long magazine poses problems, such as shooting prone, from inside vehicles etc. etc. Free the big mags
To add another suggestion for the OP: consider spending the $$$ on a sound suppressor. Of all the muzzle devices I've tried, only a true Class 3 suppressor actually made a measurable improvement on recoil control. Of course, this also makes the rifle heavier and longer, there is a big paperwork burden, and it gives the RO a headache when the timer does not sense your shots, but the suppressor will reduce felt recoil. |
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