I ordered a 300WM barrel the third week of November and it just rolled in on Saturday - so 7 weeks between order and delivery of the barrel. Everything else in the order arrived a few days after it was placed.
Barrett was kind enough to finish the barrel in Tactical Peanut Butter for my Mk22
Only had 30 minutes or so to shoot yesterday so I got a rough zero after switching out the 300NM and took it over to 600 yards. Overall, really pleased with the performance and the barrel change process left quite an impression. MRAD is a very well thought out platform at this point, especially with the toolless bolt. I'll probably get back out in two weeks to shoot groups and try different factory loads before developing my own.
Ended up ripping all the LaRue shit off the front of the Mk22 and putting on a Badger/KMW assembly for the trip. Thinking Atlas CAL for the long term, potentially on the A419 ARCA rail made for the latest gen MRAD. Anyone given that piece a try, yet?
@JB.IC yours looks similar but possibly not the MRAD-specific unit
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