I love my 12" Dlask heavy, it's wickedly accurate for a shorty on my blaster. Just know that match chamber became picky over ammo. CCI Blasters wouldn't seat fully, about 1/8" of the rear couldn't squeeze into the chamber, pull trigger, firing pin struck, WHAM! case explodes inside and blew out my extractor. WEAR SAFETY GLASSES. Later found 2 Remington ammo's that worked great, love it now.
Tip 1: Match barrel chambers are tight, install a Volq extractor claw, buy 2 to have a spare in case of blowout.
Tip 2: Barrel replace/ install on 10/22, use a heat gun/hair dryer/torch to evenly heat up receiver until just too hot to touch, bolt removed. Wiggle stock one out. With breach end of receiver down on floor and still hot, the Dlask should push down nice and snug into the receiver with a nice precise sounding "thump!". Just hold the whole thing vertical until cooled down & shrunk down/ tight, should be pretty darn true.
Tip 3: Line up extraction ram well prior to pushing down, push don't hammer it in, keep moderate pressure on the muzzle end downwards while cooling (contraction creep outwards from receiver), and clean it well before using.
Enjoy!