Para Cycling Issues???

code420 said:

I cannot figure this one out!! I need some help here

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With these issues it's best to slow down and take a deliberate path to diagnose the problem.

At this point we know it's a brand new pistol and that it's choking on factory FMJ and JHP ammo.

The next thing to do is run the plunk test with both types of ammo using two handfuls of each. Here's the plunk test:

1. Remove the barrel
2. Hold it vertically with the chamber up and the muzzle down
3. Drop a round into the chamber. You should hear a distinctive sound when the brass case mouth impacts the steel chamber ledge
4. Push the round hard against the chamber ledge while rotating it. It should rotate easily
5. Tip the barrel muzzle up. The round should easily fall out of the chamber

Set that round aside and repeat the test with 19 more rounds of ammo.

Repeat the test with the other ammo type.

If the barrel does not pass this test, the chamber should be finish reamed. If the barrel passes this test, you can rule out a minimum spec chamber as the problem and move on to the next diagnostic test.

The next diagnostic test is manual feeding to determine if the extractor is the problem.

1. Remove the recoil spring
2. Remove the extractor
3. Seat a fully loaded magazine on the closed slide
4. Manually operate the slide to load all the rounds in the magazine. You shouldn't have to slam the slide fore and aft. Just move it at a speed required to strip a round from the mag and chamber it.

Repeat the test with the other ammo type.

If the pistol passes the manual feeding test, it is likely the extractor is the gremlin. If it doesn't pass the test either the magazine or some facet of the pistol's geometry is the problem.

These two tests cost you nothing and only take a few minutes to perform.

As @gnappi suggests, check the breechface for roughness and burrs (especially around the firing pin hole).

Check the lower barrel lugs for evidence of barrel bump. Here's a picture of barrel bump: