http://www.lewismachine.net/product.php?p=67&cid=2&session=a5b23ddbacc7f42fa3f5e01df7efec42 front and http://www.lewismachine.net/product.php?p=65&cid=2&session=a5b23ddbacc7f42fa3f5e01df7efec42 rear do you prefer them to these http://www.rainierarms.com/?page=shop/detail&product_id=604 just trying to decide, I heard the HK 416 sights are shorter, what would work better w/ my XCR-L 5.56? at this point price wise I don't have a preference. Would really appreciate responses and information on either