Mk2 SPR Upper - $160 shipped Mk2 PDW Upper - $150 shipped Selling a Krytac PDW and SPR upper. The SPR Upper is BRAND NEW and the PDW upper was fielded twice , it’s still in perfect condition tho. Both come with the original 6.03 Krytac barrels. The SPR barrel is Flat hopped and the PDW barrel is S-Hopped. They also come with the metal Krytac Flash hider.