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View Full Version : Problems with new 9mm SBR, need HELP



AcenJay
10-12-09, 09:15
Hello all, I tried out my new 9mm AR-15 SBR build for the first time yesterday, and encountered nothing but problems, so I'm looking for some help in solving them. Lots of FTFs and FTEs with 2 C-Products mags, ammo was 115gr WWB, CCI Blazer, and AE. Also, the bolt catch has trouble catching the bolt and staying open when I pull back the charging handle unless I pull at the top of the bolt catch instead of pressing at the bottom which usually causes the bolt to just slide right past the catch, but this must be due to the shape compared to a 5.56 bolt, which has no problems catching and staying open. My research on the FTF/FTE issues led me here and seems to point to the C-Products 9mm mags and the Hahn dedicated block as the source of the problems. I'm not too keen on filing, bending, or modifying anything on the rifle myself, so I'm not sure on where to go from here. Here is my setup:

SWR Alpha SD upper
SWR Trident 9
Hahn Precision Dedicated 9mm magazine block
RRA 9mm hammer
RRA 9mm buffer
C-Products magazines

http://i45.photobucket.com/albums/f90/TurboJAzn/Guns/IMG_4739.jpg

kalikraven
10-12-09, 09:33
You need these

http://www.spikestactical.com/z/index.php?main_page=product_info&cPath=68_87&products_id=319

Metalform is the same company that makes Colt Factory Mags.

AcenJay
10-12-09, 12:14
Seems like that may be the first step to try, different mags. ProMags look like they work too, crap as they might be.