I have 4 Ciener kits, 1 Spikes without the smooth bore chamber, 2 CMMG's,
1 TacSol without the smooth bore And just recvd a new Spikes with the smooth bore chamber with Orings.
I have taken the smooth bore chamber adapters on 2 of my Ciener kits
and cut Oring grooves before Spikes came out with this improvement.
I have had no problems of any with the Orings, but I do get better groups.
Save a few more dollars and get the Spikes, Nickle finish is easy to clean,
Orings help to seal the chamber and keep the adapter locked in center of a 223 chamber better, no need for alot of lube if any at all, Great customer service if you have problems and they have done most of the work for you when it comes to a Quality product that runs good.
If you buy a Ciener or a CMMG and you want to use standard vel or sub ammo
then you will need to do some polishing, fine tuning to use standard vel or sub ammo.
I have polished and fine tuned many 22lr kits for ammo that the Spikes
will run with only minor tuning to the springs.
A+1 for the Spikes if you dont like to work on your kit.
A+1 for the Ciener or CMMG if you dont mind doing some work on
the 22 kit.
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