Frequently Asked Questions
All NPA frangible projectiles are composed of compressed atomized sintered copper/tin. Upon impact with a hard target (AR 500 heat treated steel or above) the projectile will fragment resulting in diminished ricochet. NPA recommends leaving a minimum safe distance between shooter and target of 6 feet. (THE STANDARD SDR LINE DOES NOT CONTAIN A JACKETED PROJECTILE).
Our Agency is currently using another manufacturers frangible ammunition, we are experiencing malfuctions such as broken projectile heads in the barrel, projectiles breaking up in flight resulting in multiple hits on target, and general malfunctions. Our current vendor is blaming the malfunctions on our firearms, what makes NPA ammunition different?
First, it's most likely not your firearms. Second, we only use premium quality projectiles that do not have nylon binders which can cause many of the fore-mentioned malfunctions. Third, we have developed proprietary loading techniques and quality control that prevent all of the following common malfunctions with frangible ammunition:
• Broken projectile heads in chamber
• Multiple hits on target
• Gas ports clogged with nylon residue
• Short stroking ( Rifle)
• Projectile pushed in the case
• Failure to feed
• Failure to extract
• Erratic grouping
Is NPA Frangible SDR ammunition completely lead free?
Our standard SDR line contains no heavy metals or heavy metal cores.
What are some of the benefits of NPA Frangible SDR Ammunition?
Aside from the shooter(s) being safe from ricochet, benefits of NPA frangible ammunition are the following:
- Ability to utilize training scenarios not permitted using standard ball ammunition
- Completely lead free environment
- Reduced range operation costs
- Reduced agency liability due to training accidents
- Reduced agency liability due to lead contamination
- Ability to reclaim copper powder
- Your agency is doing its part in the community to go "Green"
Can NPA Frangible SDR ammunition be used for agency qualification?
Yes. Our SDR line is designed to closely match the ballistics of duty ammunition.
Can NPA Frangible SDR ammunition be used for duty ammo?
We do not recommend it. Frangible ammunition was designed for training and offers no benefits over standard premium hollow point ammunition. Sintered Frangible ammunition behaves similarly to standard FMJ ammunition when it impacts soft tissue.
Will frangible ammunition break apart when it impacts drywall or other types of light barriers?
No. There are many myths floating around the internet stating that frangible ammunition is a magic material and will stop when it impacts light barriers such has drywall or plywood. Frangible projectiles are designed to break apart when it impacts a target harder that the projectile, use of AR400 steel or above is highly recommended.
Will the Frangible SDR cycle in our agencies short barreled rifles consistently?
The standard SDR line 45 grain .223 is designed to cycle all premium major manufacturers 14" M4 uppers and above (both impingement and piston system, in the STOCK MANUFACTURERS CONFIGURATION). A 55 grain .223 projectile is recommended for SBR's below 14".
What effects do different twists rates in ARs' have on frangible ammunition?
Because frangible projectiles are less dense that standard FMJ ammunition they differ dimensionally which is effected by twist rates. For instance, a standard 45 grain .223 projectile is similar in size to a standard 55 grain FMJBT (M193) which is recommended for a 1 in 9 or faster twist rate. A 55 grain .223 is similar in size to a 62 grain projectile (M855) which is recommended for a 1 in 7 twist rate.
Please note: Frangible ammunition is not recommended for non-chrome lined barrels, if your agency has non-chromed line barrels please contact your NPA representative for a customized solution.
Out of service barrels worn or "shot-out" will show signs of "key-holing" sooner with frangible ammunition than with standard FMJ ammunition.