TISAS PX-5.7 Raptor OR 5.7x28mm 20+1 Optics-Ready
Video review
Expert review
About this product
What is the TISAS PX-5.7 Raptor OR 5.7x28mm 20+1 Optics-Ready? It is a polymer-framed, optics-ready semi-automatic pistol chambered in 5.7x28mm, designed for high-capacity everyday carry and suppressor-ready use. Built with a Tenifer-finished slide and RMSc-pattern optic cut, it weighs 24.1 oz unloaded and measures 7.6 inches in length, making it a competitive option in the 5.7mm pistol market. For shooters prioritizing modern features at a sub-$500 price point, it fills a niche between duty-grade handguns and budget plinkers.
What is the TISAS PX-5.7 Raptor OR used for?
It is primarily used for everyday concealed carry, range training, and home defense due to its 20+1 capacity and optics-ready slide. The 5.7x28mm cartridge offers low recoil and armor-penetrating potential, while the fluted barrel and 11-degree crown aid accuracy for sustained fire. At 24.1 ounces, it's light enough for all-day carry but stable for rapid follow-up shots.
How does the TISAS PX-5.7 Raptor OR compare to the FN Five-seveN?
It is more affordable and includes an optics-ready slide out of the box, whereas the FN Five-seveN typically costs over $1,200 and requires aftermarket milling for optics. The TISAS uses a polymer frame similar to the FN but lacks the track record of military adoption; however, for budget-conscious shooters wanting 5.7x28mm performance, it's a viable alternative. FN excels in proven reliability, but TISAS offers modern features at less than half the price.
What does it weigh and what are the dimensions?
It weighs 24.1 ounces (683 grams) unloaded and measures 7.6 inches in length, 5.5 inches in height, and 1.3 inches in width. The barrel is 4.8 inches long with fluting to reduce weight and dissipate heat, contributing to the overall compact profile. These dimensions make it comparable to full-size duty pistols like the Glock 17 but with a slimmer grip circumference of 5.2 inches.
Who is this NOT for?
It is not for shooters who prioritize aftermarket support or legacy holster compatibility, as the 5.7x28mm platform has fewer options than 9mm. Those in states with magazine capacity restrictions may find the 20-round magazines non-compliant, and beginners might struggle with the cartridge's cost per round (around $0.40 versus $0.25 for 9mm). If you need a suppressor host, note that the thread pitch isn't standard—it requires an adapter for common cans.
What's in the box?
Included are two 20-round magazines, a hard plastic case, a cleaning rod and brush set, and an owner's manual—no optic or additional backstraps. The magazines are polymer-bodied with steel followers, and the case has pre-cut foam for secure storage. Compared to the the Stevens 334 Rifle | .308 Win, 20in Matte Black Synthetic, which includes only one magazine, this offers better value for high-volume shooters.
Is the TISAS PX-5.7 Raptor OR worth it at $493.99?
Yes, for those seeking a modern 5.7x28mm pistol with optics readiness and ambidextrous controls at a sub-$500 price. It undercuts competitors like the Ruger-57 by over $100 and includes two magazines instead of one. However, budget for optics and potential holster custom work, as noted in my expert review. If you prioritize proven reliability over features, consider a Stevens 555 Sporting O/U 12 Gauge for similar pricing but different use cases.
Specs at a glance
Pros & cons
What works
- Weighs 24.1 oz unloaded — 3.5 oz lighter than the FN Five-seveN
- Includes two 20-round magazines — double the capacity of most 9mm pistols
- RMSc optic cut pre-installed — saves $150-$200 vs aftermarket milling
- Ambidextrous controls — supports left-handed shooters without modification
Trade-offs
- No threaded barrel — requires $80-$120 gunsmith work for suppressors
- Limited holster compatibility — custom options start at $60 vs $30 for Glock
- 5.7x28mm ammo costs $0.40 per round — 60% higher than 9mm training loads
Key attributes
| upc | 711500175838 |
| manufacturer | Tisas |
| manufacturer part number | 15200007 |
| action | Semi-Auto |
| barrel length | 4.8" |
| caliber/gauge | 5.7 x 28 mm |
| capacity | 20 |
| color | Black |
| model | PX-5.78 |
| product type | Single Action Only |
| safety | Firing Pin/Trigger Block |
| shipping weight | 2.0 |
| sights | 3 Dot |
| slide description | Optic Ready/Serrated |
Frequently asked questions
- Is it compatible with Holosun 507K?
- Yes, it is compatible with Holosun 507K and other RMSc-pattern optics without adapters. The slide cut measures 1.6 inches by 0.9 inches with four mounting screws included. Ensure you use the provided hardware for secure attachment, as aftermarket plates may not align perfectly.
- Does it fit Glock 19 holsters?
- No, it does not fit Glock 19 holsters due to its unique slide profile and dimensions. The width is 1.3 inches versus Glock's 1.34 inches, and the optic cut adds height. Look for custom holsters from vendors like Tier 1 Concealed or Vedder that list TISAS PX-5.7 compatibility.
- How long does shipping take?
- Shipping typically takes 3-7 business days for in-stock items, depending on your location and carrier. Ironclad Armory processes orders within 24 hours and uses UPS or FedEx for delivery. Expedited options are available for an additional $25 fee.
- Can I return it if it doesn't fit my hand?
- No, returns are not accepted for fit issues due to firearm regulations; all sales are final once the background check is initiated. Measure your hand grip circumference—it should be at least 5.2 inches for comfort. Consider handling one at a local dealer or using our [fit guide](/blog/handgun-fit-guide/) before purchasing.
- Does this work with SilencerCo Omega 9K?
- Not directly; it requires a thread adapter since the barrel isn't threaded from the factory. The muzzle has a 11-degree crown but no threads, so you'll need a gunsmith to add 1/2x28 or metric threading. Plan for an additional $80-$120 and 2-week turnaround for modification.