Description
Threads: 1/2-28, 0.400″ long (rimfire length). We cut a proper thread relief at the base of the threads for compatibility with any 1/2-28 device.
Assembly OAL notes:
Rimfire barrels sit at a different position in the upper than centerfire barrels due to the design of the bolt. The chamber entrance is about 1.5″ farther back in the upper once assembled. This will result in a shorter overall length of rifle/pistol than the same rifle/pistol built with a centerfire barrel of the same length.
1.625″ of barrel length is inside the upper for rimfire barrels,
0.375″ of barrel length is inside the upper for a centerfire barrel.
4.0″ rimfire builds to an OAL similar to a 3.5″ centerfire (3.5″ of the barrel is in front of the upper threads)
12.1″ rimfire builds to an OAL similar to a 10.5″ centerfire (10.5″ of the barrel is in front of the upper threads)
16.1″ rimfire builds to an OAL similar to a 14.5″ centerfire (14.5″ of the barrel is in front of the upper threads)
21″ rimfire (Available in Apogee Match) builds to an OAL similar to a 20″ centerfire (19.375″ of the barrel is in front of the upper threads)
12.1″ – 10″ rail maximum for barrel threads exposed
16.1″ – 14″ rail maximum for barrel threads exposed
21″ – 19″ rail maximum for barrel threads exposed






Alexander Sakharov (verified owner) –
I bought a 16” raw stainless in February, first run, one out of 10. First chance to test it was today, April 5th. Work and stuff. But no disappointment for sure! This barrel absolutely loves CCI standard velocity! Multiple 10 shot groups at 50 yards under an inch. I also shot wolf match target and it was good, but not as good as CCI standard velocity. Ran some águila too, not very impressed. So, CCI is the king! Money well spent!