Thanks ya'll and I found this !
http://www.shootingtimes.com/handgun_reviews/hipoint_100605/
"Hi-Point was one of the first American manufacturers to use a polymer frame for firearms. In 1992-93 we offered our 9mm in polymer, then the .380, and lastly the .40 and .45 pistols. It just worked out that way because polymer offers many consumer benefits, such as reduced recoil, ease of maintenance, and a longer service life. Polymer by nature is 'slicker' than steel/alloy and is therefore easier to care for, requiring less oil, etc."
SPECIFICATIONS
Hi-Point Model JCP
.40 S&W Semiautomatic Pistol
MAKER: Hi-Point Firearms Co.
MODEL: JCP
OPERATION: Blowback Autoloader
CALIBER: .40 S&W
CAPACITY: 9 rounds
BARREL LENGTH: 4.5 inches
OVERALL LENGTH: 7.72 inches
WEIGHT, EMPTY: 32 ounces
SIGHTS: 3-dot system; fully adjustable rear; blade front
STOCKS: Integral polymer frame
SAFETY: Manual thumb safety; magazine disconnect safety; sear drop safety
FINISH: Black Powder Coat
PRICE: $169
The Hi-Point polymer frame features an integral trigger guard and accessory rail for mounting an optional laser sight. The barrel is mounted permanently to the frame while the recoil spring is located in a groove beneath the barrel where a downward extension of the slide bears upon it during recoil. Separate grip panels are held in place by screws and tabs on their bottom edges that enter cutouts in the frame.
This design depends primarily upon the slide's mass to prevent it from moving to the rear until chamber pressure has dropped to a safe level while the recoil spring provides a secondary means of preventing slide movement. Unlike those pistols mentioned at the beginning of this article, because of the weight of the slide, the spring does not have to be so strong as to make manual retraction of the slide difficult. I had several persons of varying stature, hand sizes, and strength rack the Hi-Point's slide and none experienced any difficulty.
Hi-Point pistols are striker fired and utilize a single-action trigger mechanism. A thumb safety on the left side of the frame blocks the sear when engaged. To provide additional protection, the design includes a spring-loaded sear block that falls under the sear pin arm and prevents sear movement if the pistol is dropped while a weight counteracts sear movement.
