The Ultimate Secret Of Beretta Firearms
The Beretta does not have an over-travel adjustment as a stock option. Having an over-travel stop is a big deal for performance. So, you will have to buy a steel trigger to replace the plastic one (costs about $15). Drill a hole in the trigger as high up as possible, tap it out for 6 x 32 tpi and install a set screw so that you've got an adjustable over-travel stop.
The M9 Beretta is just one of the most well know pistols on earth, entering U.S. military service in the mid 80s. As a result of its quality craftsmanship and high durability, it has the ability to fire under extreme heat and cold and also after being buried in mud, sand, snow and salt water. Add in a high capacity magazine as well as a low recoil, it's easy to find out why the M9 quickly became the common sidearm for military personnel.
To be accurate for bullseye pistol shooting, the barrel must be match grade. Bar-Sto and KKM Precision both make good barrels for the Beretta, and you'll get good results from just using a drop-in barrel. Contrary to common belief, there isn't any need to use a bushing at the front of the barrel to improve lock-up on a Beretta. The barrel locks up at the back against the slide using the locking block which is attached to the barrel, so it really is crucial that your locking block is tight and in good condition. In the event that you are installing a barrel that requires fitting, you will be removing material from the back of the barrel until the gun will go into battery reliably. Make certain and apply Dykem or other layout fluid between removing material to view where the contact points are. You want as much contact as it can be between the back of the barrel as well as the breech face on the slide. Some barrels (Bar-Sto) have extra material in addition to the back of the barrel and some of this has to be removed slowly. The point of the extra material on these barrels is to get a tighter lockup with more contact surface, plus center the back of the barrel vertically on the breech face.
The UHC M9 features a spring pistol firing mechanism which permits its users to shoot as fast as they can cock the gun. This really is a great pistol if you are just starting to get into Airsoft or if you just want to shoot some cans within your basement or backyard. You are going to enjoy hours of fun as you take down your targets with a deadly aim. On the flip side, if you are already an avid Airsoft enthusiast, then the UHC M9 is a must have for your collection. In any case, this pistol delivers great performance at a very low price.
To improve lockup, some guns have set screws installed running up under the frame rails by the back of the barrel to give extra contact points while everything is locked in battery.
To improve service life, some gun builders modify the frame rails and replace sections of the aluminum rails with pieces of steel, affixed with screws. This is only necessary if you're a top level competitor and need that extra 2% performance that includes a super tight frame-to-slide fit, plus the durability of steel on steel vs steel on aluminum. You will find no "kits" for doing this type of work, so you will have to have this kind of work completed by a person who knows what they are doing. This type of improvement of slide-to-frame fit is similar in nature to the "Accu Rail" improvement that used to be done on 1911 style pistols.
Inevitably, sights. If you replace the rear sight with an over-sized adjustable sight, it is common to need to trim down the top of the firing pin blocker lifter to keep it from hitting the bottom of the sight. Additionally, you will need to get a taller front sight. The front sight can be welded on (less common) or you may get one that slips over the stock front sight and pins in place (more common) or you may get the slide milled out with a dovetail (uncommon). Beretta Pistols makes an adjustable rear sight which allows you to keep the stock front sight and not have to modify the blocker lifter, but it is more low-profile than most competitive shooters are going to want.