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Posted: 8/19/2014 11:56:14 AM EDT
| I had built my girlfriend an AR whithis le I was stationed in Washington. Just recently got to where we were shooting it all, put a Sig Sauer red dot on it but recently decided to put BUIS on it so that she could also work on practicing that skill. Upper is a complete SAA gas block upper I bout at their store in Tacoma, WA and lower is an Aero Precision lower. This is the first AR I've had with a gas block and I purchased an used YHM front sight and used a MaTech rear sight I had living around. I mechanically zeroed the rifle before taking it to the range but once I fired my first few shots they all hit extremely low. I adjusted and adjusted until I could adjust no more and am still hitting about a foot low on my poa. I had another friend who is also extremely familiar with sighting I'm ARs and still same thing. Only thing I can figure is the sights aren't on the same plane. If so, what sights can I get to remedy this problem. Was able to sight in my A2 Fsbs with no problem. I blame it on the rifle being pink |
| I glanced at a couple of the complete uppers offered on the SAA site, and it looked like their railed gas block is receiver-height. YHM makes front sights for both rail-height and gas-block height: if you wound up with the taller gas block-height sight, that would make the rifle print low. |
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Quoted:
I glanced at a couple of the complete uppers offered on the SAA site, and it looked like their railed gas block is receiver-height. YHM makes front sights for both rail-height and gas-block height: if you wound up with the taller gas block-height sight, that would make the rifle print low. This. Ensure that your front sight is the proper model for the gas block height. Sounds like, as GSM stated, you have a gas block sight on a rail-height gas block. |
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