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This pistol has a barrel Thread Pattern of (.578" x 28) / 1:16 Twist. The slide will have no bearing between a polymer vs full metal gun function wise. ((Specifications and Features)) - Name : Xdm 45acp Blk 4.5 13+1 Thread - Desc : Threaded Barrel - Model : XD(M) - Model # : XDMT94545BHCE - Manufacturer : Springfield Armory - Caliber : 45 ACP - Type : Semi-Auto Pistol - Action : Double Action Only - Barrel : 5.28" - Capacity : 13+1 - Finish : Black - Length : 8" - Sights : 3-Dot Sights - Stock Frame : Black Polymer - Magazine : 2 / 13 rd.

I the Remington to other polymer firearms. The TPI extended threaded barrel is .578" x 28. Full Specs - 1:16 Twist. The slide will have no bearing between a polymer vs full metal gun function wise. ((Specifications and Features)) - Name : Xdm 45acp Blk 4.5 13+1 Thread - Desc : Threaded Barrel - Model : XD(M) - Model # : XDMT94545BHCE - Manufacturer : Springfield Armory - Caliber : 45 ACP - Type : Semi-Auto Pistol - Action : Double Action Only - Barrel : 5.28" - Capacity : 13+1 - Finish : Black - Length : 8" - Sights : 3-Dot Sights - Stock Frame : Black Polymer - Magazine : 2 / 13 round.

thread pattern .578 x 28 poly or steel does not matter (I prefer the weight of steel) specs for the REMINGTON UPC: 885293963399 Description: REM 1911 R1 5.5TB 45AP PST 8RD Brand: Remington Model: Remington 1911 R1 Enhanced Threaded Barrel Type: Pistol: Semi-Auto Caliber: 45AP Finish: Satin Black Oxide Action: Single Action Stock: Enhanced Pewter/Black Checkered Wood Laminate Sight: FT: Tall with Dot RR: Tall with Dot Barrel Length: 5.5 Threaded Match with Thread Protector Overall Length: 9.0 Weight: 42 oz Capacity: 8+1 # of Mags: 2 Safety: Enhanced Wide Thumb, Beavertail Grip Receiver: Carbon Steel Frame & Slide Packaging: Cardboard Box Features: Lowered Ejection Port, Enhanced Hammer; Skeletonized Trigger, Made in USA .578X28 RH Thread

This pistol has a barrel Thread Pattern of (.578" x 28) / 1:16 Twist. The slide will have no bearing between a polymer vs full metal gun function wise. *****The addition of a silencer would probably boil down to balance between a polymer an all metal pistol with the nod favoring the all metal pistol*****.

hread pattern .578 x 28 poly or steel does not matter (I prefer the weight of steel) specs for the REMINGTON UPC: 885293963399 Description: REM 1911 R1 5.5TB 45AP PST 8RD Brand: Remington Model: Remington 1911 R1 Enhanced Threaded Barrel Type: Pistol: Semi-Auto Caliber: 45AP Finish: Satin Black Oxide Action: Single Action Stock: Enhanced Pewter/Black Checkered Wood Laminate Sight: FT: Tall with Dot RR: Tall with Dot Barrel Length: 5.5 Threaded Match with Thread Protector Overall Length: 9.0 Weight: 42 oz Capacity: 8+1 # of Mags: 2 Safety: Enhanced Wide Thumb, Beavertail Grip Receiver: Carbon Steel Frame & Slide Packaging: Cardboard Box Features: Lowered Ejection Port, Enhanced Hammer; Skeletonized Trigger, Made in USA .578X28 RH Thread