Barrel Extension with M4 Feedramps
Making your own barrel? Changing your feed ramps? Changing the caliber and chamber in some way? Well if this is the case, you might need a new barrel extension. Very hard to find these in Canada.
- Hardened metal construction
- Ground finish for high precision
- M4 feedramp profile
- Weight: 48g
- Dimensions: 28mm long × Ø29.7mm rim diameter × Ø25.4mm body diameter
- One barrel extension
- All mil-spec AR-15 barrels
- All mil-spec uppers
Tools required: Head space gauges, barrel extension tool torque wrench, file, possibly a chamber reamer
Installation notes: This is not for the faint of heart. You need to align the feed-ramps to the gas port and attain correct chamber length all at the same time. This means lots of hand fitting, filing, sweating, swearing and beer. I cheat and machine a new gas port once the chamber is sorted to remove one variable at the cost of a lot of repairing.