9mm woes....

[Madsmiley]

Took the 9 out for its intital run tody and had a couple of snags...

1) when bolt is locked open on empty chamber and back of stock is hit (when putting in rack) bolt rleases and slams home.

2)cycling-fire a round and new round is stripped and chambered as it should.Problem is that its not enough to recock the hammer.

Lower is running a Hahn mag adaptor,brownells LW trigger springs and supposedly a pistol weight buffer and spring..

Ammo was various 115gr,didnt have access to any 147gr.That will be my first trouble shooting idea.After that Im open to suggestions.

[BigTinVA]

What bolt and hammer are you running?

[Madsmiley]

What bolt and hammer are you running?

Ramped RRA bolt and dedicated 9mm hammer

[sgtlmj]

Took the 9 out for its intital run tody and had a couple of snags...

1) when bolt is locked open on empty chamber and back of stock is hit (when putting in rack) bolt rleases and slams home.

2)cycling-fire a round and new round is stripped and chambered as it should.Problem is that its not enough to recock the hammer.

Lower is running a Hahn mag adaptor,brownells LW trigger springs and supposedly a pistol weight buffer and spring..

Ammo was various 115gr,didnt have access to any 147gr.That will be my first trouble shooting idea.After that Im open to suggestions.

1) I haven't seen any AR that won't release the bolt carrier when a sharp rap is delivered to the back of the stock.

2) With the ramped carrier, you don't need to use the 9mm hammer. The notch cut in the hammer could be hanging things up on the back of the ramp. Try a standard 5.56 AR hammer.

[SuicideHz]

Your bolt catch is like mine- it's kinda smooth at the top- not as sharp and tall as others I've seen. A new one might fix your problem with the bolt slamming home unwanted.

[Madsmiley]

Your bolt catch is like mine- it's kinda smooth at the top- not as sharp and tall as others I've seen. A new one might fix your problem with the bolt slamming home unwanted.

Its brand new out of a parts kit..

BigTin-good suggestion on changing out the hammer,will give that a try tomorrow

[SuicideHz]

Yeah, so? There are just different designs that are different enough to cause a problem.

[Madsmiley]

Yeah, so? There are just different designs that are different enough to cause a problem.

I thought mil-spec was all the same

[SuicideHz]

They work the same on 5.56 carriers so yes, they are the same.

But since 9mm bolts can be ramped differently in different places, some work better than others.

[Robb Jensen]

I thought mil-spec was all the same

You need to try an unnotched AR15 hammer. It's pin hole sized is the 'mil-spec' .154" but the top of the hammer is like a M16 hammer but with the sear tail bobbed off.