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Mag or mag block issue?
Hi all
Just installed a Hahn block on an SBR and topped it with a PSA 7.5" upper. Using 2 different ASC mags, 115 and 124gr ball worked fine, but 147 HST wouldn't feed. The bolt hold open was also inconsistent.
Using a PSA glock lower, the upper fed all the above, including the 147s.
I've read good things about Hahn blocks, so I'm wondering if this is most likely a magazine, block or ammo?
Any thoughts?
Last edited by Caduceus; 01-22-17 at 12:09.
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Last edited by bfoosh006; 08-29-17 at 19:37.
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Will try. I just got 2 metalform in yesterday. I also read somewhere recently that Colt styles hiccup more with HP rounds.
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FWIW when I put my first 9mm Colt pattern AR I used a Hahn toploader block & Metalform mags cause that seemed to be the overwhelmingly most popular trouble free setup.
No issues in 4 years of use, mainly FMJ round nose and some truncated (flat nose) bullets.
I've never owned any ASC mags, but in another thread someone claimed the Metalforms feed flat/horizontally and like to sit high while the ASCs feed at a slightly more upwards angle and like to sit low. So a bottom loading mag block can be adjusted to work with both but Hahn top loaders prefer the Metalforms.
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