Sig Sauer ProForce 21-Round Airsoft Magazines for P320 M18 Air Guns - Green Gas Housing with Tan/Black Base Plate | High-Capacity Airsoft Accessories for Tactical Training & Competitive Shooting

M17 PROFORCE Magazine (CO2) M18 PROFORCE Magazine (GG) P229 PROFORCE Magazine (GG) 1911 AIR PISTOL BB MAGAZINE AIRGUN, BB MAGAZINE, 1911 WTP, 4.5MM CAL SIG AIR P365 MAGAZINE Add to Cart Add to Cart Buying Options Add to Cart Add to Cart Add to Cart Customer Reviews 4.1 out of 5 stars 138 4.3 out of 5 stars 67 3.7 out of 5 stars 40 4.2 out of 5 stars 258 4.6 out of 5 stars 58 4.3 out of 5 stars 887 Price $44.84$44.84 $56.08$56.08 — no data $27.25$27.25 $31.59$31.59 $29.99$29.99 Caliber 6mm Plastic BB 6mm Plastic BB 6mm Plastic BB BB cal (4.5mm) Factory replacement magazine for the We The People BB Gun in 4.5mm 4.5mm Steel BB Magazine Capacity 21 rounds 21 rounds 21 rounds 17 rounds no data 20 Rounds

COMPATIBILITY - Make sure you are prepared for whatever may come your way, and pick yourself up a spare 21 round magazine for your SIG SAUER M18 airsoft pistol; this magazine is the OEM design green gas model; choose magazines with black or tan base plate

FACTORY REPLACEMENT 21-ROUND MAGAZINE - This durable magazine has a capacity of 21 rounds; a high-tension internal steel spring ensures rapid and smooth BB feeding from the magazine to the firing chamber, with less risk of jams

GET MORE TIME TRAINING - Load the 21 rounds and fill the magazine with green gas to be ready for your next reload; with this SIG SAUER magazine for M18 you will get more time training and less time loading

DURABLE CONSTRUCTION - Constructed fully from metal alloy, this durable airsoft magazine option can withstand high impact drops, and offers a more authentic weight to your lowdown; such construction ensures that the magazine won't break or malfunction easily

DURABLE AIRSOFT MAGAZINE - Green Gas powers this magazine, which is filled directly; the SIG AIR ProForce line of airsoft guns is designed for professionals who train frequently and want the option of training safely in realistic force-on-force scenarios