Colt m16-22 any good?

[tremor64]

I've got one - lotta fun for the low $ - I believe it's a Walther with the "Colt" part simply a license agreement for the name and logo
functionality makes it no training aid - not to be confused with anything like a real M4
you're better off with a .22 upper for your actual M4 or another dedicated .22 like S&W - but hey, it's still some fun

[NYH1]

I don't know anything about the Colt. I've had my friends S & W M&P 15-22 for a few months and as others have said, it's great!

NYH1.

[RHINOWSO]

Pass. Only two 22LR tactical rifles I'd consider owning are the M&P-15/22 and SIG 522.

I own a M&P and its been flawless with standards and Hi velocity suppressed & unsuppressed, and with subs flawless when suppressed.

[Nightstalker865]

Are the 15-22's still having issues running the bulk Remington Thunderbolt ammo?

[SurplusShooter]

Are the 15-22's still having issues running the bulk Remington Thunderbolt ammo?

I have a S&W M&P-15-22 in addition to many other .22LR Firearms and I compete with them regularly: Remington .22LR ammo is Junk, In all my Experience. I keep trying it once or twice to see if they (Remington) have improved their "Golden Bullet" or "Thunderbolt" brands over the years, and still It never runs reliably in any of my Semi-Auto's.

Not the guns fault, just avoid that junk ammo.

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Back to the OP's question:

"Me too", another +1 for the S&W.
Also, un-like most Conversion-bolts or Dedicated-uppers: the last-shot-hold-open works correctly on the S&W (really holds open on the bolt-catch, not that silly Magazine-follower jam that most conversion kits & 22 uppers will use).

[The Lance]

for 300 it may be worth it. Those drop in kits in standard AR's tend to not work very well, are not accurate and foul the hell out of the gas tube..

I would go dedicated AR over a kit..