Upgrading your AR-15 with a piston upper can help with BCG reliability and ease of maintenance. Let's look at some options to get you started when you're considering a switch from a direct impingement system.
Issues with Gas Systems
Over-Gassing and Under-Gassing
One issue with gas systems is mismanagement, resulting in either over-gassing or under-gassing. Over-gassing can lead to increased recoil and wear, while under-gassing can cause cycling issues. You might want to:
- Use a heavier buffer like the H2 or H3
- Install an adjustable gas block
- Ensure proper gas block alignment
For those looking into quick solutions, these can help with less spending and are well-documented options
Proper assembly is key to keeping your AR-15 functioning well. Ensure components like the castle nut and the gas key are staked to prevent them from loosening. Regular maintenance is necessary, even for piston systems that run cleaner
Recommended Piston Uppers for AR-15 Deal
Primary Weapons Systems MK116 MOD 2-M
The MK116 MOD 2-M is known for reliability and accuracy.
- Chambered in .223 Wylde
- 16.1" barrel, 1:8 twist rate
- Three-position adjustable gas system
- PicLok System for M-LOK and Picatinny
Patriot Ordnance Factory P415 Edge
The POF P415 Edge offers great value for beginners in piston systems without breaking the bank:
- Smooth operation with balanced affordability
- Entry-level cost without sacrificing too much on features
LWRC IC-SPR
LWRC IC-SPR is a premium choice with excellent engineering for users seeking:
- High-quality build
- Exceptional reliability
However, finding standlone upper may be difficult, click below to check what's available
Other Picks
- LMT (Lewis Machine & Tool)
- HK (Heckler & Koch)
- Caracal
These offer variety and robustness, although specifics may vary. Check the latest specs and features online (source).
Budget-Friendly Options
Bear Creek Arsenal offers AR-15 uppers under $200. While these are not piston systems, they help you get into AR customization cost-effectively
Piston System Myths and Considerations
Not all piston systems eliminate the need for cleaning. Piston systems may run cleaner, but not everything is compatible especially when assemblying the piston part on the barrel and fitting with the handguard. Compatibility with your lower receiver may need checking, as not every system fits seamlessly.
Longer barrels give better velocity but might be less maneuverable. Systems with adjustable gas settings can be useful if you switch up ammo or use a suppressor
If quality is what you seek, the PWS MK116 MOD 2-M may fit you well. On a budget? The P415 Edge by Patriot Ordnance Factory could be a hit. Happy shooting!