Does the Smith & Wesson M&P Lower Parts KIT work with the Daniel Defense 14.5" 5.56 M4A1 Upper?

Smith & Wesson lower and Daniel Defense upper compatibility

Yes, they fit

The Smith & Wesson M&P Lower Parts KIT works with the Daniel Defense 14.5" 5.56 M4A1 Upper. Our compatibility rules found no conflict between them.

No one has built this exact setup yet, but Smith & Wesson lowers with Daniel Defense uppers are a common pairing.

Counted from real GunPartPicker builds: parts lists people put together while planning to buy.

Checked by the same rules the AR builder runs on every part you add: caliber, frame size, receiver pattern, thread pitch and gas length.

Fit is judged from the specs retailers list, which can be missing or wrong. Confirm with the manufacturer before you buy, and have a qualified gunsmith check any build before you fire it.

How often builders pair the Smith & Wesson lower and Daniel Defense upper

Backed by tens of thousands of qualified builds that have both a lower and an upper.

Lower Receivers builders put under the Daniel Defense 14.5" 5.56 M4A1 Upper

Share of builds with the Daniel Defense 14.5" 5.56 M4A1 Upper and any lower

  • Smith & Wesson M&P Lower Parts KIT

    Not in enough builds yet to report.

  • Daniel Defense 14.5" 5.56 M4A1 Upper

    Of upper picks
    1.6%
    Median paid
    $1499
How we count ⌄

These shares come from GunPartPicker's build data: real parts lists people put together while planning a purchase, not sales or surveys. A build counts a part only when it is the final pick for its slot, so parts that were swapped out never count. Fit never comes from these numbers; it comes from our compatibility rules alone.

Frequently built with the Smith & Wesson lower and Daniel Defense upper

The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.

Smith & Wesson M&P Lower Parts vs Daniel Defense 14.5" 5.56 M4A1: specs and prices

Smith & Wesson M&P LowerDaniel Defense 14.5" 5.56
Best price$64.89 at BattleHawk Armory$1544.00 at Primary Arms
Stores6 of 7 in stock3 of 6 in stock
AssemblyParts KitComplete
PlatformAR-15AR-15
ColorBlackn/a
Gas System Lengthn/aCarbine
Calibern/a5.56 NATO
Lengthn/a14.5

Both for $1608.89 at today's best prices.

Today's best prices and 90 day price history

Every store we track for each part, cheapest in stock first. Prices are checked through the day.

Smith & Wesson M&P Lower Parts KIT

Daniel Defense 14.5" 5.56 M4A1 Upper

Price history, last 90 days

  • Smith & Wesson M&P Lower Parts KIT: lowest $64.89 on Jul 5, highest $93.99 on Jul 6 over the last 90 days.
  • Daniel Defense 14.5" 5.56 M4A1 Upper: lowest $1339.99 on Jul 21, highest $1621.00 on Aug 2 over the last 90 days.

Upper Receivers most paired with Smith & Wesson lowers

The Smith & Wesson M&P Lower Parts KIT is not in enough builds yet, so these are the most picked next to any Smith & Wesson lower. Only parts our rules say fit the Smith & Wesson M&P Lower Parts KIT are listed.

Lower Receivers frequently paired with the Daniel Defense 14.5" 5.56 M4A1 Upper

Most picked next to it in real builds. Only parts our rules say fit the Daniel Defense 14.5" 5.56 M4A1 Upper are listed.