While you can purchase these parts separately from us, we highly recommend our 4-piece free float handguard kit so you can avoid ruining your upper caused by holding onto it instead of the barrel, or by using improper tools. This kit includes the barrel vise jaws to avoid any potential damage to your upper.
WARNING: Do NOT hold onto the upper when tightening or loosening the barrel nut because you risk destroying the upper.
- Professional Barrel Nut Wrench – Quickly and easily remove the factory S&W M&P15-22 barrel nut.
- Barrel Vise Jaws – Holds the S&W M&P15-22 barrel securely when performing work on your firearm (never clamp the upper or you risk damaging it). Works on other firearms as well.
- Handguard Converter Nut – Takes the place of your factory S&W M&P15-22 barrel nut and has the threads for your new free float handguard. Any free float handguard that will screw onto an AR-15 pattern rifle will screw onto the S&W M&P15-22 handguard converter nut.
- Handguard Converter Wrench – A special spanner wrench to tighten the S&W M&P15-22 handguard converter nut.
There are other parts that may need to be sourced from other retailers, such as the Delta Ring Assembly.
Free Float Handguard Kit Features
- Leaves a .1 inch (2.5mm) gap between the back of the handguard and the front of the Picatinny rail.
- Handguard Converter Nut has the same 1.25-18 outside thread as most AR-15 uppers.
- Handguard Converter Nut is black hard coat anodized to a Type III MIL-SPEC specification.
- Simple, step-by-step instructions are included.
- Designed, developed, and manufactured in the USA.
- Lifetime guarantee. If it ever fails we’ll replace it for free.
For complete instructions, see How to convert the S&W M&P15-22 to an M4 carbine style rifle.
Standard vs Modified
The “standard” kit requires that you do nothing to alter your rifle, which leaves a 1/4″ gap between the back of the delta ring and the front of the Picatinny rail.
The “modified” kit requires the following permanent modifications of your upper to close the gap between the back of the barrel nut and the front of the Picatinny rail, bringing the gap down from 1/4 inch to 3/32 inch.
- Full removal of one tab
- Partial or full removal of the other tab