General

Will any upper fit on any lower?

Standard

Will any upper fit on any lower?

No, combining upper and lower receivers of different brands will make no difference in accuracy whatsoever. On the other hand, the quality of your upper receiver certainly will.

Are Daniel Defense lowers forged or billet?

Daniel Defense uses all cold hammer-forged steel barrels. And they are made in-house at Daniel Defense (and have been since 2009).

Does Socom use Daniel Defense?

The Daniel Defense M4A1 features the M4A1 RIS II, which has been in use by US Special Operations Command (SOCOM) for the SOPMOD Block II program since 2005.

Is the Daniel Defense M4A1 a SBR?

The M4A1 has an M4 profile 14.5” barrel with a permanent pinned and welded extended flash hider that extends the overall barrel length to 16”, so it is not considered a short-barreled rifle (SBR) and is not NFA restricted.

Are all uppers compatible with all lowers?

No, unfortunately you cannot put an AR-10 upper on an AR-15 lower. Even though some parts may be interchangeable, the bolt carrier group and receiver foundations are made to different dimensions. You can quickly recognize that the AR-10 magazines are larger and would not fit in an AR-15 lower receiver.

Can you use a 556 lower for 300 blk?

Standard 5.56 magazines will work with the 300 Blackout without issue, or even a loss of a round or two. The simple fact is, nearly every standard AR 15 part will work with 300 Blackout and that is the reason building 300 blackout is growing in popularity.

Does any military use Daniel Defense?

Daniel Defense Government product line is available for U.S. DoD and other U.S. Government agencies, as well for International Customers under the Foreign Military Sales (FMS) Program.

Are Daniel Defense rifles mil spec?

The Daniel Defense M4A1 Mil-Spec + 5.56mm Rifle offers an accurate and comfortable shooting platform. This 5.56 NATO rifle is built with a cold hammer-forged barrel that has been chrome-lined to reduce friction for enhanced velocity and precision.

Can you put any AR-15 Upper on any AR-15 lower?