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9mm AR15 Trigger | 9mm AR 15 Trigger

The 9mm AR15 is easily where the most confusion lies with the 9mm AR platform. My own research was met with a lot of “Should work” , “Most 2-Stage” and similar vague answers. One of the problems is most AR15 TRIGGER manufacturers have not tested their triggers in 9mm AR15 rifles. The other problem is there are two different kinds of 9mm AR15 BOLT CARRIERS, ramped and un-ramped. We will get into specifics below.

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9mm AR15 MAGAZINE – The most common 32 round 9mm AR15 magazine got it’s start long ago when 32 round 9mm UZI magazines could be had inexpensively just about anywhere that sold such items. Depending on the 9mm conversion unit used there was a choice of modified or unmodified UZI magazines. The Colt 9mm Carbine and Rock River Arms 9mm AR both use modified Uzi magazines. The Hahn 9mm conversion block also utilizes the modified UZI magazines. Olympic Arms used to offer a conversion block to utilize Sten magazines. I do not believe that is still an option from Olympic Arms. Olympic Arms also offers a 30 round 9mm AR15 magazine that is their proprietary design to common their .40 S&W, .45acp and 10mm variants. This design has nothing in common with the UZI and UZI inspired designed.

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JP Enhanced 9mm AR15 BOLT CARRIER GROUP is machined to the same exacting tolerances as our bolt carriers, this second generation 9mm bolt assembly is an entirely new design that eliminates the need for a central mass (slug) to readily function with our 9mm JP Silent Captured Spring without compromising bolt weight and reliability. In fact, when combined with our JPSCS-9MM, you have the heaviest, most reliable 9mm operating system that dramatically reduces bolt bounce while improving accuracy.

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Wilson Combat AR9 9mm AR15

Wilson Combat AR9 9mm AR15 carbine was designed from the ground up as the new standard in pistol caliber carbine reliability. The use of common 9mm service pistol magazines makes it an ideal choice for patrol, home defense and cost-effective tactical training. The Wilson Combat AR9 can be ordered with your choice of GlockⓇ 17, S&WⓇ M&P or BerettaⓇ 92 magazine compatibility and configured as a pistol, carbine or short barreled rifle (all NFA rules apply). The AR9 is offered with your choice of fluted or non-fluted barrels in multiple lengths and various Wilson Combat designed muzzle devices.

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Rock River Arms 9mm Lower Receiver Conversion Kit

One-stop, drop-in solution with the parts you need to convert a mil-spec small pin (.154″ dia.), .223 lower receiver with collapsible stock to accept a 9mm upper receiver assembly. Kit includes a replacement hammer, recoil spring, and buffer optimized to handle the reduced recoil force of the 9mm Luger round, as well as a Magwell Conversion Block that installs in your rifle’s magazine well to allow it to accept Rock River’s 25-round 9mm magazines, available separately. To use the Kit on a full-size rifle with fixed A1/A2-style buttstock, install the separately available Delrin® Spacer in buffer tube behind recoil spring.

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