FN FNX-45 Tactical .45 ACP vs Glock G21 Gen5 MOS .45 ACP

Both are full-size polymer-framed .45 ACP pistols and both are optic-ready. The FN FNX-45 Tactical .45 ACP is the larger, heavier gun at 8.6" long, 6.5" tall and 33.3 oz against the Glock G21 Gen5 MOS .45 ACP at 8.07", 5.51" and 29.1 oz, a 4.2 oz difference, and it carries 15+1 against 13+1. It runs a 5.3" threaded barrel with suppressor-height night sights, where the G21 is not threaded. The FNX is DA/SA with an ambidextrous manual safety and decocker and a 4.5 lb trigger; the G21 is striker-fired with a trigger safety at 5.8 lb. MSRP is $1,394.00 against $700.00.

Pick the FN FNX-45 Tactical if:

• You want two more rounds of .45, 15+1 against 13+1
• You are running a suppressor or want to: threaded barrel and suppressor-height night sights from the factory
• You want DA/SA with ambidextrous safety/decocker and the 1.3 lb lighter listed trigger (4.5 lb vs 5.8 lb)

Pick the Glock G21 Gen5 MOS if:

• Price decides it: $700.00 against $1,394.00, a $694.00 difference, with three magazines rather than two
• You want the smaller, lighter gun: 29.1 oz against 33.3 oz and 5.51" tall against 6.5"
• You want the longer sight radius, 6.93" against 6.4", and simple striker-fired controls with one trigger pull weight

Both take a dot and both are full-size .45s. The FNX buys two rounds, a threaded barrel and DA/SA ambidextrous controls for $694.00 more; the G21 is lighter, shorter and simpler.