The Zastava Arms USA PAP M90 is a semi-automatic rifle chambered in 5.56 NATO / .223 Remington. It runs a gas piston action, has a 16.3-inch chrome-lined barrel, and ships with one 30-round magazine. Fully assembled it weighs 7.9 lbs. 
 

Key Specifications 

• Manufacturer: Zastava USA 
• Model: PAP M90 
• Type: Modern Sporting Rifle 
• Caliber: 5.56 NATO / .223 Remington 
• Action: Semi-Automatic (Gas Piston) 
• Barrel Length: 16.3 inches 
• Capacity: 30 rounds (includes one magazine) 
• Weight: 7.9 lbs 
• Finish Color: Black 
• Sights: Open Notch, Adjustable Sights 
• Optic Mount: 1913 Picatinny Rail 
• Muzzle Type: Flash Hider 
   

Features 

The Magpul Zhukov collapsible/folding stock improves packability and lets the shooter adjust length of pull to fit. Chrome-lining on the barrel extends service life and maintains consistent performance across a high round count. The quad rail system gives enough real estate for lights, lasers, or foregrips without needing aftermarket rail sections. The gas piston system keeps carbon further from the receiver compared to a direct impingement design, which can reduce cleaning frequency. 
 

Usage 

The PAP M90 fits the range of uses typical for a 5.56 semi-auto: general range use, competitive shooting, and home defense. The folding stock makes storage and transport more compact. The chrome-lined barrel and gas piston action are practical advantages for anyone who shoots high volumes or wants a lower-maintenance platform.

The Zastava PAP M90 gets a generally favorable reception among semi-auto rifle buyers, with a few practical concerns noted.

Build quality is frequently mentioned positively. Owners describe the construction as solid and the fit of the components as tight for the price range.

The folding stock draws consistent praise for its practicality. It reduces the overall footprint for transport and storage while still functioning normally when deployed.

Accuracy relative to price comes up often. Many owners find the PAP M90 accurate enough for range work and defensive applications, and consider its value strong against comparably priced options.

5.56 NATO compatibility is seen as a straightforward advantage -- the caliber is widely available and affordably priced, which matters for anyone shooting regularly.

The most common criticism is weight. At 7.9 lbs the PAP M90 is heavier than some competing semi-autos, which some shooters notice during extended handling or rapid-fire drills.

Controls are also mentioned occasionally as less intuitive than those on other platforms, particularly for shooters coming from AR-pattern rifles where the controls are more standardized.

Aftermarket support is narrower than for AR or AK platforms. Parts and accessories exist, but buyers looking for extensive customization options will find fewer choices than with more mainstream designs.