Jack9 (9mm, .40 S&W)

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Buy it @ Rainier Arms (Click Here)

Buy it @ Midway USA (Click Here)

** Jack 9 has been discontinued, but it is still available through Rainier Arms and Midway USA at the links above **


This is our pistol caliber version of The Jack, now updated to the Gen2 styling. Glock magazine fed. Available as the AR-15 lower that is compatible with most AR15 pistol caliber uppers chambered in 9mm, .40 S&W or .357 SIG. 

With the Gen2 Jack9 we also improved the mag well, beefed up the ejector/magazine stop (and made it adjustable via set screws, to accommodate slight geometry differences across different types of 'Glock' mags) and switched to a threaded screw instead of a pin for the mag lever.  

The Gen2 Jack9 also has provisions for LRBHO (last round bolt hold open).  Now there are a number of amazing firearm platforms that don't include LRBHO, HK's MP5 is a classic example. Ever hear of anyone complaining about their MP5 not holding the bolt back on an empty mag? Me either. Personally I go without it on my PCC builds, mainly because I think of the extra LRBHO parts as potential failure points, and I like to keep additional mechanical features to a minimum. Now that said, I understand people want it sometimes, for personal preference or for competition use, so the receiver has been machined so it can accept this (<--- click link) LRBHO lever from our friends at Angstadt Arms (~$15, sold separately). If you buy their LRBHO lever, consider getting the lightened bolt catch spring they sell as well. 

I'm also asked which uppers and upper parts I recommend for the Jack9.  Our SBUR03 upper will work well and look great but if you want an off-the-shelf built upper to go with your Jack9 lower, take a look at the Angstadt Arms uppers listed here (<--- click link). They are very nice and work really well with our Jack9 lower.

Lastly, occasionally people want a spare magazine stop / ejector.  This is the one we use on the Jack9.  If you need a spare or a replacement for whatever reason, click that link to find it.  -JSharps

Weight: ~13 ounces

** not compatible with DI gas system uppers or rifle-caliber bolts **

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