
Milwaukee M12 3 Crown Stapler
Score: 88/100
Metabo HPT N3804AB3
Score: 85/100Rankings

The Milwaukee 2447-20 is a compact, cordless 12V stapler designed for professionals needing portability and reduced hand fatigue. It excels in tight spaces with its lightweight design and impressive 1500-staple runtime. However, it is limited to T50 staples and requires purchasing batteries separately.

The Metabo HPT N3804AB3 is a professional-grade pneumatic narrow crown stapler designed for finish carpentry, cabinetry, and furniture assembly. It features tool-free depth adjustment, selective firing modes, and an integrated air duster to clear debris during operation. It is best suited for professional carpenters and cabinetmakers who have access to air compressors and require precise, lightweight stapling.
| Attribute | ![]() | ![]() |
|---|---|---|
14.29 mmbest | 12.7 mm | |
89 staplesbest | — | |
| ↓ lower better | 3 lbs | 2.3 lbsbest |
— | 70 PSIbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Fastener Compatibility(4) | ||
Staple Type | T50 | Narrow Crown |
Staple Gauge | 20 | 18 Gauge |
Staple Length Range (mm) | 6.35-14.29 mm | 12.7 to 38.1 mm |
Staple Crown Width | 3/8 | 1/4 inch |
Adjustability & Safety(1) | ||
Safety Mechanism | Dry Fire Lockout | Sequential/Bump |
Power & Performance(2) | ||
Power Source | Cordless | Pneumatic |
Firing Mode | Sequential/Contact | Sequential/Bump |
Physical & Ergonomics(3) | ||
Weight (lbs) | 3.0 lbs | 2.3 lbs |
Dimensions | 7.25x2.5x3.4 inches | 9.25 x 2.2 x 10.1 inches |
Grip Type | Standard | Ergonomic |
Magazine & Loading(1) | ||
Magazine Capacity (staples) | 89 staples | Unknown staples |

Products in the top-left offer the best value (high score, low price).

Professional reviewers emphasize the Milwaukee 2447-20 as an effective upgrade from manual staplers, praising its compact design and impressive runtime.
Search results lack direct user reviews, but spec sheets imply general praise for portability and ease of use over manual tools.




Professional reviewers position the Metabo HPT N3804A5 as a pro-grade tool for carpenters, emphasizing its reliability in finish and trim work.
Indirect praise from retailer descriptions highlights consumer appreciation for the lightweight ergonomics and the utility of the integrated air duster for trim and furniture jobs.