Mrod-air guns?

The $625 is the starting point an it is a single shot, There are a lot of upgrades that realistically put this rifle about $900.00. Still a decent price and they have a newer stock that looks a whole lot nicer. Be sure you know what you are getting at each price point. Then again, you can always start out at the $625 and build on it at your leisure. I have considered getting this rifle. I have not seen a poor review.
 
The starting price point of a P-12 is $675. The P-12 was my first bullpup. I still have it and it is extremely accurate and reliable, plus it is super easy to take apart and work on. O-ring changes are very easy to do, although mine has never had any leaks. It represents excellent value for the money. It has a titanium air tube which is lighter than steel and won't rust if moisture gets inside. The velocity is easy to adjust by merely screwing the hammer spring tension screw in the back of the rifle in or out. It comes with an excellent functioning depinger device installed that even acts like a regulator of sorts to keep the shot string fairly consistent. IMO, the original P-12 stock shape looks better than the newer curvier stock. Mrodair stocks both styles so it's your choice. Both of the stock shapes come in a blond color beech which is somewhat blah looking. I stripped the finish off of mine and dyed it a walnut color to make it look more traditional looking.

Now for the shortcomings. The P-12 in stock form has a heavy hammer which makes a somewhat loud hammer slap when firing. It also makes an odd burping sound which is similar to a Crosman Marauder. This is due to the fact that the hammer is wasting air by rebounding against the valve poppet several times. This can be cured by lightening the hammer and by adding a rubber dampener to the hammer striker. Mrodair sells these for $22 but you can make your own for 50 cents by purchasing a delrin spacer from Home Depot and installing it yourself. The trigger isn't terrible and can be adjusted to a decent two stage pull, but it tends to want to unscrew itself in the linkage from repeated shooting. The parkerized finish on the air tube is not very durable and will come off easily if you take the P-12 apart several times as I have done to make modifications inside of the rifle. I found the bolt stop on mine to be machined incorrectly which allowed the bolt to flop against the receiver when closed. I had to add some JB weld inside of the receiver to adjust the stopping point of the bolt at the correct position.

I installed a HuMa regulator in my P-12 which gives a 55 shot string between 900-905 fps which is superb for any air rifle at any price. The factory barrel on mine is a tack driver and will shoot 10 shot groups with all shots touching each other at 30 yards and can be covered with a dime. The P-12 is a great value in bullpups and I recommend it. It is not comparable in quality or features to $1500 bullpups but it is a much better value and it is the best Chinese rifle I've ever handled by far. I wouldn't have taken the chance but I saw my friend's P-12 and realized it was not the typical Chinese POS I had seen previously.